Sodium aluminium phosphate

Sodium aluminium phosphate (CAS 10305-76-7), also known commercially as E541, is a leavening acid and buffering agent used primarily in food manufacturing.

Where is Sodium aluminium phosphate used?

• Baking: slow-acting leavening acid in baking powders and self-rising flours, releasing gas during oven heat
• Processed cheese: emulsifying salt that improves melt characteristics and prevents fat separation
• Pharmaceuticals: pH buffering agent in solid dosage forms and antacid preparations
• The acidic form reacts with sodium bicarbonate to generate carbon dioxide.

Good to know: The acidic form (SALP) is the predominant commercial specification. Food-grade material conforming to E541 specifications under EU food additive regulations is the standard trade form for global distribution; FCC-grade material is available for North American food and pharmaceutical markets.

Commercial specifications

• Acidic form (SALP) is the predominant commercial specification
• Food-grade conforming to E541 under EU food additive regulations