Phosphoric acid
SIGALD/04107 - puriss., meets analytical specification of Ph. Eur., BP, NF, FCC, 85.0-88.0%
Synonym: Orthophosphoric acid
CAS Number: 7664-38-2
Empirical Formula (Hill Notation): H3O4P
Molecular Weight: 98.00
EC Number: 231-633-2
MDL Number: MFCD00011340
Linear Formula: H3PO4
Product Type: Chemical
| anion traces | chloride (Cl-): ≤5 mg/kg |
| fluoride (F-): ≤5 mg/kg | |
| nitrate (NO3-): ≤5 mg/kg | |
| nitrate (NO3-): in accordance | |
| phosphite, hypophosphite (as H3PO3): ≤30 mg/kg | |
| phosphite, hypophosphite (as H3PO3): in accordance | |
| sulfate (SO42-): ≤50 mg/kg | |
| sulfate (SO42-): in accordance | |
| assay | 85.0-88.0% |
| bp | 158 °C (lit.) |
| cation traces | As: ≤2 mg/kg |
| Cd: ≤3 mg/kg | |
| Cu: ≤10 mg/kg | |
| Fe: ≤10 mg/kg | |
| Hg: ≤1 mg/kg | |
| Pb: ≤3 mg/kg | |
| Zn: ≤10 mg/kg | |
| density | 1.685 g/mL at 25 °C (lit.) |
| form | liquid |
| grade | puriss. |
| impurities | alkali phosphates, in accordance |
| residual solvents, in accordance | |
| substance precip. by Ammonia, in accordance | |
| ≤0.0005% heavy metals (as Pb) | |
| ≤0.001% volatile acids (as CH3COOH) | |
| InChI | 1S/H3O4P/c1-5(2,3)4/h(H3, |
| InChI key | NBIIXXVUZAFLBC-UHFFFAOYSA |
| mp | ~40 °C (lit.) |
| quality | meets analytical specification of Ph. Eur., BP, NF, FCC |
| Quality Level | 200  |
| SMILES string | OP(O)(O)=O |
| suitability | passes test for appearance of solution |
| vapor density | 3.4 (vs air) |
| vapor pressure | 2.2 mmHg ( 20 °C) |
| 5 mmHg ( 25 °C) |
