Identification
H3PO4
M = 98,00 g/mol
CAS [7664-38-2]
EC number: 231-633-2
Taric code: 2809 20 00
Synonyms
Orthophosphoric acid, Phosphoric Acid
Applications
analytical chemistry, laboratory reagent, in fertilizer compositions, solvents (for pharmaceuticals synthesizing), antioxidant (in food industry).
Specifications
| assay (acidimetric)……. min. 85 % identity…………………….. passes test appearance of solution…. passes test colour (Hazen)…………….. max. 10 insoluble in water… max. 0,001 % volatile acids (as CH3COOH)….. max. 0,001 % chlorides (Cl)……… max. 0,0002 % fluorides (F)……….. max. 0,0001 % nitrates (NO3)……. max. 0,0003 % phosphites, hypophosphites (as H3PO3)…………………. max. 0,002 % sulfates (SO4)……………. max. 0,002 % antimony (Sb)……………. max. 5 ppm arsenic (As)……………… max. 0,5 ppm cadmium (Cd)…………. max. 0,5 ppm | calcium (Ca)………. max. 0,002 % cobalt (Co)…………. max. 0,5 ppm copper (Cu)……….. max. 0,5 ppm heavy metals (as Pb)……………. max. 0,001 % iron (Fe)…………….. max. 0,001 % lead (Pb)……………. max. 0,5 ppm magnesium (Mg)………… max. 5 ppm manganese (Mn)……… max. 0,5 ppm nickel (Ni)…………….. max. 1 ppm potassium (K)………. max. 5 ppm sodium (Na)…………. max. 0,02 % zinc (Zn)………………. max. 2 ppm substances precipitated with ammonia……………………. passes test substances reducing KMnO4……… passes test |
Packaging
- 2.5 L
Physical data
- Density: 1,71 g/cm3
- Solub. in water: (20 ºC): miscible
- Melting point: ~ 21 ºC
- Boiling point: ~ 158 ºC
- Vapour pressure: (25 ºC) 2,2 hPa
- pH(100 g/l H2O, 20 ºC) < 0,5
- Hygroscopic