Aluminium Dihydrogen Phosphate
Aluminium Dihydrogen Phosphate is an inorganic acid salt of formula Al(H₂PO₄)₃ used as a slow acting leavening acid and as a binder in refractory ceramics.
In bakery systems the salt releases its acidity primarily under oven heat, giving a delayed reaction profile that supports tall, even crumb in cakes and muffins.
We source bulk Aluminium Dihydrogen Phosphate from top China manufacturers for our partners. The manufacturers are in Jiangsu. A smaller requirement can ship in a combined container with other ingredients.
Please send the grade you need, the volume and your destination port, and we will come back with a solution and a price.
or call +86-21-6858 0751
- Packaging
- 250 kg plastic drum or 1,000 kg IBC tote
- ISO 9001
- HACCP
- Halal
- Kosher
Specifications
| Item | Specification |
|---|---|
| Appearance | White to off-white free-flowing powder |
| Assay (as Al(H₂PO₄)₃) | ≥ 95.0% |
| Aluminium (as Al₂O₃) | 15.0-17.0% |
| Phosphorus (as P₂O₅) | 65.0-68.0% |
| P₂O₅ to Al₂O₃ Molar Ratio | 2.9-3.1 |
| pH (10% aqueous solution, 25 °C) | 1.5-3.0 |
| Specific Gravity (50% aqueous solution, 20 °C) | 1.45-1.50 |
| Loss on Drying (105 °C, 2 h) | ≤ 1.0% |
| Water-Insoluble Matter | ≤ 0.5% |
| Sulphate (as SO₄) | ≤ 0.3% |
| Iron (as Fe) | ≤ 100 mg/kg |
| Fluoride (as F) | ≤ 50 mg/kg |
| Heavy Metals (as Pb) | ≤ 10 mg/kg |
| Lead | ≤ 2 mg/kg |
| Arsenic | ≤ 3 mg/kg |
Common Markets Grades
There are two grades of Aluminium Dihydrogen Phosphate, food and technical.
Food grade is a fine white powder with controlled neutralising value, particle size, and reactivity profile. The reactivity is measured by dough rate of reaction tests at standardised temperatures.
Technical grade dominates volume and serves as a high temperature binder. It is produced both as crystalline solid and as concentrated aqueous solution for spray application to refractory boards, ceramic fibres, and abrasive wheels.
Applications
- Heat activated leavening acid in cake doughnuts, muffins, and layer cakes
- Component of complete chemical leavening systems paired with sodium bicarbonate
- Binder for refractory ceramic insulation boards and fibre blankets
- Bond phase in alumina and zirconia abrasive wheels and grinding stones
- High temperature coating for metal moulds and crucibles
- Acid binder in dental cement and laboratory ceramic repair
- Phosphate bond in foundry sand cores and shells
- Surface treatment for galvanized steel to improve paint adhesion
- Component of acid resistant tile grout and chemical industry mortars
- Catalyst support in petrochemical and fine chemical synthesis
China Manufacturers of Aluminium Dihydrogen Phosphate
Top Aluminium Dihydrogen Phosphate manufacturers in China.
Jiangsu Hens Food Technology Co., Ltd.11 ingredients in the directory- Xuzhou Hens Phosphate Co., Ltd.11 ingredients in the directory
Company names and logos are the property of the manufacturers themselves. They are listed here because our own directory records them as producing this ingredient. A listing is not an endorsement by them, and we do not represent them or speak on their behalf.
How We Help Source Aluminium Dihydrogen Phosphate
Direct Factory Sourcing
We run the whole process: selecting the manufacturer from the top Chinese food ingredient producers, negotiating the price, verifying quality, and coordinating the logistics. You deal with us instead of with several factories at once.
Original Packaging and Documents from the Manufacturer
The manufacturer sends your Aluminium Dihydrogen Phosphate out of its own factory in the original packing, through to your destination port. The COA, COO, MSDS, TDS and any certifications reach you from the manufacturer as well.
Free Samples and Lead Time
We send 100 to 500 g free for your own laboratory to test and you cover only the courier, usually within 2 to 3 working days. ETD is usually within 7 to 15 days once the order is confirmed, and we check that date against the factory's own manufacturing schedule before we give it to you.
Combined Shipment
We can load Aluminium Dihydrogen Phosphate together with other ingredients such as Sodium Acid Pyrophosphate, Monocalcium Phosphate and Diammonium Phosphate into one 20' FCL. If your quantity is small, we can also ship LCL.
Regulatory Status
Aluminium based leavening acids have come under increasing regulatory scrutiny over the past two decades.
In the European Union aluminium containing additives are tightly controlled under regulation 1333/2008 and many uses have been withdrawn or limited. Where permitted, the additive is referenced through its phosphate parent E numbers.
The U.S. Food and Drug Administration permits aluminium phosphates as GRAS substances for use as leavening agents under 21 CFR part 182.
Several major food manufacturers have voluntarily reformulated to aluminium free leavening systems based on sodium acid pyrophosphate, calcium acid pyrophosphate, or monocalcium phosphate. The salt remains in use mainly in specialty industrial bakery applications and outside the food sector.
Manufacturing Process
Aluminium Dihydrogen Phosphate is produced by reacting aluminium hydroxide or freshly precipitated aluminium oxide trihydrate with phosphoric acid in a molar ratio that favors the mono-aluminium tri-dihydrogen phosphate structure.
The reaction Al(OH)₃ + 3 H₃PO₄ → Al(H₂PO₄)₃ + 3 H₂O runs in stirred reactors at moderate temperature. The resulting viscous syrup is either spray dried to a free flowing powder or sold as a 50 percent solution.
Food grade material is made from purified aluminium hydroxide and food grade phosphoric acid with strict control of arsenic, lead, and fluoride.
