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Monoaluminum Phosphate Binder
IDENTIFICATIONSynonyms: Mono-aluminum (aluminium) phosphate; Aluminum (aluminium) phosphate monobasic; Aluminum (aluminium) dihydrogen phosphate; Aluminum tri(dihdrogen phosphate)
CAS No.: 13530-50-2 EC No.: 236-875-2
Molecular Weight: 317.94
Structural Formula: 
Solubility: miscible in water.
Industrially, monoaluminum phosphate binder may be manufactured by acid-base neutralization process between high purity aluminun hydroxide Al(OH)3 and phosphoric acid 85%. By controlling reactant's pH value, reaction can be managed at level that just one free proton is neutralized. The final products have two types: viscous liquid (aqueous solution) and solid powder. Reaction equation is given as follows:
3H3PO4+AI(OH)3→AI(H2PO4)3+3H2O
Monoaluminum phosphate is industrally applied as high-temperature binder for ceramic, silicon steel & refractory material etc. Our product is specially designed for these purposes, widely accepted by major steel firms such as WISCO, TISCO and Panzhihua Iron & Steeland and many refractory manufactures.
SPECIFICATION| 50% aqueous solution | High-P aqueous solution | Powder Grade | |
|---|---|---|---|
| Al2O3 | 8.0%~9.0% | 8.2%~8.7% | 15%~17% |
| P2O5 | 32.0%~34.0% | 34.5%~36.0% | 63~67% |
| Fe2O3 | 0.01% max. | 0.01% max. | 0.02% max. |
| Specific Gravity | 1.467-1.470 | 1.50-1.60 | - |
| pH value | ~1.2 | ~0.85 | 1.4~2.0 |
| Appearance | Colorless sticky liquid | Colorless sticky liquid | white powder |
15kgs per 10L can for liquid product
30kgs per 20L can for liquid product
300kgs per 200L drum for liquid product
1500kgs per 1000L IBC for liquid product
25kg/woven bags for powder product
Although monoaluminum phosphate is a salt, it is still a corrosive substance with low pH value. It is regulated by UN as
Acidic corrosive liquid without other sub-risks.
UN 3264,
Class 8,
PG III
R-Phrase: R34
S-Phrase: S1/2, S26, S45
For more information, please see MSDS
