Phosphoric acid
SIGALD/30417 - puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., ≥85%
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
agency | reag. ISO |
reag. Ph. Eur. | |
USP/NF | |
anion traces | chloride (Cl-): ≤2 mg/kg |
fluoride (F-): ≤1 mg/kg | |
nitrate (NO3-): ≤3 mg/kg | |
phosphite, hypophosphite (as H3PO3): ≤20 mg/kg | |
phosphite, hypophosphite (as H3PO3): in accordance | |
sulfate (SO42-): ≤30 mg/kg | |
assay | ≥85% |
bp | 158 °C (lit.) |
cation traces | As: ≤0.5 mg/kg |
Ca: ≤10 mg/kg | |
Cd: ≤1 mg/kg | |
Co: ≤1 mg/kg | |
Cr: ≤1 mg/kg | |
Cu: ≤1 mg/kg | |
Fe: ≤5 mg/kg | |
K: ≤5 mg/kg | |
Mg: ≤5 mg/kg | |
Mn: ≤0.5 mg/kg | |
Na: ≤20 mg/kg | |
Ni: ≤1 mg/kg | |
Pb: ≤1 mg/kg | |
Sb: ≤2 mg/kg | |
Zn: ≤2 mg/kg | |
density | 1.685 g/mL at 25 °C (lit.) |
form | liquid |
grade | ACS reagent |
puriss. p.a. | |
impurities | reducing impurities, in accordance |
residual solvents, in accordance | |
substances precipitated by ammonia, in accordance | |
≤0.001% heavy metals (as Pb) | |
≤0.001% in water insoluble matters | |
≤0.001% KMnO4 red. matter (as O) | |
≤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 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) |
Application: |
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Other Notes: | Concentrated phosphoric acid is approx. 85% H3PO4 (aqueous). |
Other Notes: | The article number 30417-4X2.5L will be discontinued. Please order the single bottle 30417-2.5L which is physically identical with the same exact specifications. The article number 30417-4X2.5L-M will be discontinued. Please order the single bottle 30417-2.5L-M which is physically identical with the same exact specifications. The article number 30417-6X1L will be discontinued. Please order the single bottle 30417-1L which is physically identical with the same exact specifications. The article number 30417-6X1L-M will be discontinued. Please order the single bottle 30417-1L-M which is physically identical with the same exact specifications. |
Symbol | ![]() |
Signal word | Warning |
Hazard statements | H290 |
Precautionary statements | P234 - P390 |
Hazard Codes | C |
Risk Statements | 34 |
Safety Statements | 26-45 |
RIDADR | UN 1805 8 / PGIII |
WGK Germany | WGK 1 |
Flash Point(F) | Not applicable |
Flash Point(C) | Not applicable |
Purity | ≥85% |
bp | 158 °C (lit.) |
mp | ~40 °C (lit.) |
Density | 1.685 g/mL at 25 °C (lit.) |
UNSPSC | 12352106 |