{"id":17850,"date":"2026-04-18T20:32:11","date_gmt":"2026-04-18T15:02:11","guid":{"rendered":"https:\/\/aluminiummagazine.com\/mag\/?p=17850"},"modified":"2026-04-18T20:32:12","modified_gmt":"2026-04-18T15:02:12","slug":"aluminium-bromide-complete-guide","status":"publish","type":"post","link":"https:\/\/aluminiummagazine.com\/mag\/aluminium\/compounds\/aluminium-bromide-complete-guide.html","title":{"rendered":"Aluminium Bromide (AlBr\u2083): The Complete Guide"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Aluminium bromide, properly known as aluminium tribromide, is a powerful Lewis acid. It appears as a white to pale yellow crystalline solid that fumes in moist air and reacts violently with water. Its most important role is as a catalyst in organic chemistry, specifically in Friedel-Crafts reactions used to make pharmaceuticals, fragrances, and advanced polymers. It is also a highly corrosive substance requiring strict safety protocols.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">1. <strong>Basic Identification<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Chemical Formula:<\/strong> AlBr\u2083 (monomer); commonly exists as the dimer Al\u2082Br\u2086 in solid and liquid states.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Alternative Names:<\/strong> Aluminum tribromide, tribromoalumane, anhydrous aluminium bromide.<\/p><div class=\"pai-ad\" style=\"min-height:250px;visibility:hidden;\"><span style=\"display: block; text-align: center; font-size: 10px; margin: 0 0 10px 0; color: #999999;\">Ads<\/span>\r\n<!-- Display-300x250-1 -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:inline-block;width:300px;height:250px\"\r\n     data-ad-client=\"ca-pub-3838168351244230\"\r\n     data-ad-slot=\"9933646018\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Molecular Weight:<\/strong> 266.69 g\/mol (anhydrous).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>CAS Number:<\/strong> 7727-15-3 (anhydrous).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Appearance:<\/strong> White to yellowish-orange crystalline powder or lumps. Fumes strongly in humid air.<\/p><div class=\"pai-ad\" style=\"min-height:250px;visibility:hidden;\"><span style=\"display: block; text-align: center; font-size: 10px; margin: 0 0 10px 0; color: #999999;\">Ads<\/span>\r\n<!-- Display-300x250-1 -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:inline-block;width:300px;height:250px\"\r\n     data-ad-client=\"ca-pub-3838168351244230\"\r\n     data-ad-slot=\"9933646018\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script><\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<div style=\"height:75px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">2. <strong>Physical Properties<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Understanding how this compound behaves physically helps determine how to store and handle it.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2.1 Key Data Table<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-center\" data-align=\"center\">Property<\/th><th class=\"has-text-align-center\" data-align=\"center\">Anhydrous AlBr\u2083<\/th><\/tr><\/thead><tbody><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>Melting Point<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\">97.5 \u00b0C (207.5 \u00b0F)<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>Boiling Point<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\">255 \u00b0C (491 \u00b0F) \u2013 sublimes without decomposition<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>Density<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\">3.2 g\/cm\u00b3<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>Vapor Pressure<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\">1 mmHg at 81 \u00b0C<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>Solubility<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\">Reacts violently with water. Soluble in ethanol, diethyl ether, benzene, toluene, and carbon disulfide.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">2.2 Physical Description<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">In its pure state, aluminum bromide forms shiny, plate-like crystals. Because it is <strong>hygroscopic<\/strong> (pulls moisture from the air), it quickly forms a liquid film on its surface and releases dense white fumes of hydrogen bromide gas.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<div style=\"height:75px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">3. <strong>Chemical Behavior and Reactions<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Aluminum bromide is best described as an <strong>electron pair acceptor<\/strong> \u2013 the definition of a Lewis acid. The aluminum atom is electron-deficient and aggressively seeks electrons from other molecules.<\/p><div class=\"pai-ad\" style=\"min-height:250px;visibility:hidden;\"><span style=\"display: block; text-align: center; font-size: 10px; margin: 0 0 10px 0; color: #999999;\">Ads<\/span>\r\n<!-- Display-300x250-1 -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:inline-block;width:300px;height:250px\"\r\n     data-ad-client=\"ca-pub-3838168351244230\"\r\n     data-ad-slot=\"9933646018\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">3.1 Reaction with Water (The Most Hazardous Reaction)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">This is the single most important reaction to understand for safety.<\/p>\n\n\n\n<p class=\"has-large-font-size wp-block-paragraph\"><strong>AlBr\u2083 + 3H\u2082O \u2192 Al(OH)\u2083 + 3HBr \u2191<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Observation:<\/strong> Extremely vigorous, exothermic reaction. Produces heat and clouds of corrosive hydrogen bromide gas.<\/p><div class=\"pai-ad\" style=\"min-height:250px;visibility:hidden;\"><span style=\"display: block; text-align: center; font-size: 10px; margin: 0 0 10px 0; color: #999999;\">Ads<\/span>\r\n<!-- Display-300x250-1 -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:inline-block;width:300px;height:250px\"\r\n     data-ad-client=\"ca-pub-3838168351244230\"\r\n     data-ad-slot=\"9933646018\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Result:<\/strong> Aluminum bromide cannot be dissolved in water to make a simple solution; it destroys itself and creates a dangerous acid cloud instead.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3.2 Synthesis (How It Is Made)<\/h3>\n\n\n\n<p class=\"has-large-font-size wp-block-paragraph\"><strong>2Al + 3Br\u2082 \u2192 Al\u2082Br\u2086<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Process:<\/strong> Aluminium metal shavings are heated with bromine vapor in an inert atmosphere (argon or nitrogen). This is the primary method for making high-purity anhydrous material.<\/p><div class=\"pai-ad\" style=\"min-height:250px;visibility:hidden;\"><span style=\"display: block; text-align: center; font-size: 10px; margin: 0 0 10px 0; color: #999999;\">Ads<\/span>\r\n<!-- Display-300x250-1 -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:inline-block;width:300px;height:250px\"\r\n     data-ad-client=\"ca-pub-3838168351244230\"\r\n     data-ad-slot=\"9933646018\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">3.3 Reaction with Alcohols and Carboxylic Acids<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Aluminium bromide reacts rapidly with alcohols to form aluminium alkoxides and hydrogen bromide. It reacts with carboxylic acids to produce <strong>acyl bromides<\/strong>, a crucial step in the synthesis of many organic chemicals.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<div style=\"height:75px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">4. <strong>Industrial and Laboratory Applications<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">While you may not see aluminum bromide on a store shelf, it is a hidden workhorse in the creation of modern materials.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">4.1 Friedel-Crafts Catalyst (Primary Use)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The most significant application is in <strong>Friedel-Crafts alkylation and acylation<\/strong>.<\/p><div class=\"pai-ad\" style=\"min-height:250px;visibility:hidden;\"><span style=\"display: block; text-align: center; font-size: 10px; margin: 0 0 10px 0; color: #999999;\">Ads<\/span>\r\n<!-- Display-300x250-1 -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:inline-block;width:300px;height:250px\"\r\n     data-ad-client=\"ca-pub-3838168351244230\"\r\n     data-ad-slot=\"9933646018\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>What it does:<\/strong> It helps attach carbon chains (alkyl groups) or acyl groups to benzene rings.<\/li>\n\n\n\n<li><strong>Why it matters:<\/strong> This reaction is fundamental to the manufacture of:<\/li>\n\n\n\n<li><strong>Pharmaceuticals:<\/strong> Intermediate steps for drugs like ibuprofen.<\/li>\n\n\n\n<li><strong>Fragrances:<\/strong> Synthesis of musk-scented ketones.<\/li>\n\n\n\n<li><strong>Polymers:<\/strong> Production of high-performance thermoplastics.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">4.2 Bromination Agent<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">AlBr\u2083 is used to introduce bromine atoms into organic molecules. In some reactions, it offers better selectivity (control over where the bromine atom attaches) compared to other bromine sources.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">4.3 Isomerization and Polymerization<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">It is used as an initiator in the polymerization of specific monomers, such as those used in electronics manufacturing, and as a catalyst to rearrange molecular structures (isomerization) to produce more stable or desirable fuel additives.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<div style=\"height:75px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">5. <strong>Safety and Hazard Management<\/strong><\/h2>\n\n\n\n<p class=\"has-large-font-size wp-block-paragraph\">\u26a0\ufe0f<\/p><div class=\"pai-ad\" style=\"min-height:250px;visibility:hidden;\"><span style=\"display: block; text-align: center; font-size: 10px; margin: 0 0 10px 0; color: #999999;\">Ads<\/span>\r\n<!-- Display-300x250-1 -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:inline-block;width:300px;height:250px\"\r\n     data-ad-client=\"ca-pub-3838168351244230\"\r\n     data-ad-slot=\"9933646018\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>GHS05<\/strong><br>Corrosive<\/p>\n\n\n\n<p class=\"has-large-font-size wp-block-paragraph\">\u2757<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>GHS07<\/strong><br>Irritant \/ Harmful<\/p><div class=\"pai-ad\" style=\"min-height:250px;visibility:hidden;\"><span style=\"display: block; text-align: center; font-size: 10px; margin: 0 0 10px 0; color: #999999;\">Ads<\/span>\r\n<!-- Display-300x250-1 -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:inline-block;width:300px;height:250px\"\r\n     data-ad-client=\"ca-pub-3838168351244230\"\r\n     data-ad-slot=\"9933646018\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Critical Warning:<\/strong> Aluminum bromide is a <strong>corrosive, water-reactive solid<\/strong>. It is not explosive, but mixing it with water can generate enough heat to ignite nearby flammable materials.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">5.1 Health Effects<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Route of Exposure<\/th><th>Effect<\/th><\/tr><\/thead><tbody><tr><td><strong>Inhalation<\/strong><\/td><td>Severe irritation of nose, throat, and lungs. Can cause chemical pneumonia or pulmonary edema (fluid in lungs).<\/td><\/tr><tr><td><strong>Skin Contact<\/strong><\/td><td>Causes deep, painful chemical burns. Because it reacts with moisture on skin, the damage continues until the compound is completely removed or neutralized.<\/td><\/tr><tr><td><strong>Eye Contact<\/strong><\/td><td>Causes severe corneal burns and potential permanent vision loss.<\/td><\/tr><tr><td><strong>Ingestion<\/strong><\/td><td>Severe burning pain in mouth, throat, and stomach. Do NOT induce vomiting.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">5.2 Personal Protective Equipment (PPE)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Handling aluminum bromide requires full laboratory or industrial hygiene discipline.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Respiratory:<\/strong> NIOSH-approved dust respirator (N95 or P100) at minimum. In case of fume release, use supplied-air respirator.<\/li>\n\n\n\n<li><strong>Hands:<\/strong> Heavy-duty butyl rubber or neoprene gloves.<\/li>\n\n\n\n<li><strong>Eyes:<\/strong> Chemical splash goggles (not just safety glasses).<\/li>\n\n\n\n<li><strong>Body:<\/strong> Rubber apron or full Tychem suit.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">5.3 First Aid Measures<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Skin:<\/strong> If dry powder is present and loose, brush off gently. Then flush skin with <strong>copious amounts of cool water<\/strong> for at least 15 minutes. Seek medical attention immediately.<\/li>\n\n\n\n<li><strong>Eyes:<\/strong> Rinse with gentle stream of water for at least 20 minutes, holding eyelids open. <strong>Get to an ophthalmologist immediately.<\/strong><\/li>\n\n\n\n<li><strong>Inhalation:<\/strong> Move victim to fresh air. If breathing is difficult, administer oxygen. Seek medical help.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">5.4 Firefighting Information<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Suitable Extinguishers:<\/strong> Dry sand, dry chemical powder, carbon dioxide.<\/li>\n\n\n\n<li><strong>DO NOT USE:<\/strong> <strong>Water<\/strong> (causes violent reaction and toxic HBr gas cloud). <strong>Foam<\/strong> (contains water).<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<div style=\"height:75px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">6. <strong>Storage and Handling Guidelines<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">6.1 Storage Conditions<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Container:<\/strong> Keep in a tightly sealed glass or HDPE container inside a secondary container.<\/li>\n\n\n\n<li><strong>Atmosphere:<\/strong> Store under <strong>dry nitrogen or argon<\/strong> blanket.<\/li>\n\n\n\n<li><strong>Temperature:<\/strong> Recommended storage at <strong>2\u00b0C to 8\u00b0C<\/strong> (refrigerated).<\/li>\n\n\n\n<li><strong>Incompatibles:<\/strong> Keep strictly separate from water, alcohols, strong bases (like sodium hydroxide), and oxidizing agents.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">6.2 Disposal Considerations<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Do not pour down the drain. The approved disposal method involves <strong>controlled hydrolysis<\/strong>:<\/p><div class=\"pai-ad\" style=\"min-height:250px;visibility:hidden;\"><span style=\"display: block; text-align: center; font-size: 10px; margin: 0 0 10px 0; color: #999999;\">Ads<\/span>\r\n<!-- Display-300x250-1 -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:inline-block;width:300px;height:250px\"\r\n     data-ad-client=\"ca-pub-3838168351244230\"\r\n     data-ad-slot=\"9933646018\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script><\/div>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Dissolve in a dry, inert solvent (like dichloromethane) inside a fume hood.<\/li>\n\n\n\n<li>Slowly drip the solution into <strong>ice-cold water<\/strong> with vigorous stirring to neutralize the heat.<\/li>\n\n\n\n<li>Neutralize the resulting acidic mixture with a base (sodium carbonate).<\/li>\n\n\n\n<li>Dispose of the neutralized liquid according to local hazardous waste regulations.<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<div style=\"height:75px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">7. <strong>Environmental Impact<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Aluminum bromide is not persistent in the environment because it reacts instantly with atmospheric moisture or water in soil to form aluminum hydroxide and hydrogen bromide. However, the <strong>hydrogen bromide (HBr)<\/strong> released is highly toxic to aquatic life. It drastically lowers the pH of water (acidification), which can kill fish and aquatic insects. Spills must be contained and prevented from entering waterways or sewers.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<div style=\"height:75px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">8. <strong>Comparison with Other Aluminum Halides<\/strong><\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-center\" data-align=\"center\">Compound<\/th><th class=\"has-text-align-center\" data-align=\"center\">Formula<\/th><th class=\"has-text-align-center\" data-align=\"center\">Melting Point<\/th><th class=\"has-text-align-center\" data-align=\"center\">Lewis Acidity<\/th><th>Industrial Note<\/th><\/tr><\/thead><tbody><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>Aluminum Fluoride<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\">AlF\u2083<\/td><td class=\"has-text-align-center\" data-align=\"center\">1291 \u00b0C<\/td><td class=\"has-text-align-center\" data-align=\"center\">Weak (Ionic)<\/td><td>Used in aluminum smelting (Cryolite mineral).<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>Aluminum Chloride<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\">AlCl\u2083<\/td><td class=\"has-text-align-center\" data-align=\"center\">190 \u00b0C<\/td><td class=\"has-text-align-center\" data-align=\"center\">Very Strong<\/td><td>The \u201cworkhorse\u201d catalyst, cheaper, used in dyes and detergents.<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>Aluminum Bromide<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\"><strong>AlBr\u2083<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\"><strong>97.5 \u00b0C<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\"><strong>Very Strong<\/strong><\/td><td>Preferred when higher selectivity or solubility in non-polar solvents is needed.<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>Aluminum Iodide<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\">AlI\u2083<\/td><td class=\"has-text-align-center\" data-align=\"center\">191 \u00b0C<\/td><td class=\"has-text-align-center\" data-align=\"center\">Strong<\/td><td>Used less frequently, mostly in specialized organic reductions.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<div style=\"height:75px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">9. <strong>Frequently Asked Questions<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Q: Is aluminum bromide the same as the bromine in a hot tub?<\/strong><br>A: No. Hot tubs use sodium bromide or bromine tablets. Aluminum bromide is an anhydrous solid used in manufacturing; it is <strong>never<\/strong> used in water treatment because it reacts violently with water, producing heat and acid gas.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Q: What happens if I leave the bottle open on the bench?<\/strong><br>A: Within minutes, the white powder will turn into a brownish liquid sludge. It will draw moisture from the air, hydrolyze, and fill the room with corrosive hydrogen bromide fumes. The material will be ruined.<\/p><div class=\"pai-ad\" style=\"min-height:250px;visibility:hidden;\"><span style=\"display: block; text-align: center; font-size: 10px; margin: 0 0 10px 0; color: #999999;\">Ads<\/span>\r\n<!-- Display-300x250-1 -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:inline-block;width:300px;height:250px\"\r\n     data-ad-client=\"ca-pub-3838168351244230\"\r\n     data-ad-slot=\"9933646018\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Q: Why is it sold as Al\u2082Br\u2086 and not AlBr\u2083?<\/strong><br>A: In the solid and liquid state, two molecules of AlBr\u2083 join together (dimerize) to share bromine atoms, satisfying the aluminum atom\u2019s need for a full electron shell. When vaporized at high temperatures, it breaks apart into single AlBr\u2083 units.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Q: Can I use it in a school science experiment?<\/strong><br>A: <strong>No.<\/strong> This is an advanced chemical for university-level or industrial chemistry labs with proper fume hood ventilation. The risk of acid burns and inhalation injury is too high for general education settings.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<div style=\"height:75px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">10. <strong>Summary Data Sheet<\/strong><\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-center\" data-align=\"center\"><strong>Chemical Name<\/strong><\/th><th class=\"has-text-align-center\" data-align=\"center\">Aluminum Bromide (Anhydrous)<\/th><\/tr><\/thead><tbody><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>Formula<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\"><strong>AlBr\u2083<\/strong> \/ <strong>Al\u2082Br\u2086<\/strong><\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>Appearance<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\">White to pale yellow-orange solid<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>Melting Point<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\"><strong>97.5 \u00b0C<\/strong><\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>Solubility<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\">Reacts with water; soluble in benzene, toluene, ether<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>Primary Hazard<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\">Corrosive, Water-Reactive (Releases Toxic Gas)<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>Primary Use<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\">Friedel-Crafts Catalyst for Chemical Synthesis<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>Storage<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\">2\u20138 \u00b0C, sealed under dry inert gas<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/p><div class=\"pai-ad\" style=\"min-height:250px;visibility:hidden;\"><span style=\"display: block; text-align: center; font-size: 10px; margin: 0 0 10px 0; color: #999999;\">Ads<\/span>\r\n<!-- Display-300x250-1 -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:inline-block;width:300px;height:250px\"\r\n     data-ad-client=\"ca-pub-3838168351244230\"\r\n     data-ad-slot=\"9933646018\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script><\/div><script>document.addEventListener(\"DOMContentLoaded\",function(){\n        if(window.innerWidth <= 768){\n            if (\"immediate\" === \"delay\") {\n                setTimeout(function(){document.querySelectorAll(\".pai-ad\").forEach(el=>el.style.visibility=\"visible\")},0);\n            } else if (\"immediate\" === \"scroll\") {\n                window.addEventListener(\"scroll\",function(){\n                    let s=window.scrollY\/(document.body.scrollHeight-window.innerHeight);\n                    if(s>0.1){\n                        document.querySelectorAll(\".pai-ad\").forEach(el=>el.style.visibility=\"visible\");\n                    }\n                });\n            } else {\n                document.querySelectorAll(\".pai-ad\").forEach(el=>el.style.visibility=\"visible\");\n            }\n        } else {\n            document.querySelectorAll(\".pai-ad\").forEach(el=>el.remove());\n        }\n    });<\/script>","protected":false},"excerpt":{"rendered":"<p>Aluminium bromide, properly known as aluminium tribromide, is a powerful Lewis acid. It appears as a white to pale yellow crystalline solid that fumes in moist air and reacts violently with water. Its most important role is as a catalyst in organic chemistry, specifically in Friedel-Crafts reactions used to make pharmaceuticals, fragrances, and advanced polymers. &#8230; <a title=\"Aluminium Bromide (AlBr\u2083): The Complete Guide\" class=\"read-more\" href=\"https:\/\/aluminiummagazine.com\/mag\/aluminium\/compounds\/aluminium-bromide-complete-guide.html\" aria-label=\"Read more about Aluminium Bromide (AlBr\u2083): The Complete Guide\">Read more<\/a><\/p>\n","protected":false},"author":12,"featured_media":17932,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4155],"tags":[4141,4142],"class_list":["post-17850","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-compounds","tag-aluminium-compounds","tag-aluminum-formula"],"_links":{"self":[{"href":"https:\/\/aluminiummagazine.com\/mag\/wp-json\/wp\/v2\/posts\/17850","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/aluminiummagazine.com\/mag\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/aluminiummagazine.com\/mag\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/aluminiummagazine.com\/mag\/wp-json\/wp\/v2\/users\/12"}],"replies":[{"embeddable":true,"href":"https:\/\/aluminiummagazine.com\/mag\/wp-json\/wp\/v2\/comments?post=17850"}],"version-history":[{"count":0,"href":"https:\/\/aluminiummagazine.com\/mag\/wp-json\/wp\/v2\/posts\/17850\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/aluminiummagazine.com\/mag\/wp-json\/wp\/v2\/media\/17932"}],"wp:attachment":[{"href":"https:\/\/aluminiummagazine.com\/mag\/wp-json\/wp\/v2\/media?parent=17850"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/aluminiummagazine.com\/mag\/wp-json\/wp\/v2\/categories?post=17850"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/aluminiummagazine.com\/mag\/wp-json\/wp\/v2\/tags?post=17850"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}