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Merck

04102

Phosphoric acid

puriss., ≥99%

Synonym(s):

Orthophosphoric acid

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About This Item

Linear Formula:
H3PO4
CAS Number:
Molecular Weight:
98.00
EC Number:
231-633-2
UNSPSC Code:
12352106
PubChem Substance ID:
Beilstein/REAXYS Number:
1921286
MDL number:
Technical Service
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vapor density

3.4 (vs air)

vapor pressure

2.2 mmHg ( 20 °C), 5 mmHg ( 25 °C)

grade

puriss.

assay

≥99%

impurities

≤0.002% heavy metals (as Pb)

bp

158 °C (lit.)

mp

~40 °C (lit.)

density

1.685 g/mL at 25 °C (lit.)

anion traces

chloride (Cl-): ≤10 mg/kg, nitrate (NO3-): ≤10 mg/kg, phosphite, hypophosphite (as H3PO3): ≤100 mg/kg, sulfate (SO42-): ≤20 mg/kg

cation traces

Fe: ≤10 mg/kg

SMILES string

OP(O)(O)=O

InChI

1S/H3O4P/c1-5(2,3)4/h(H3,1,2,3,4)

InChI key

NBIIXXVUZAFLBC-UHFFFAOYSA-N

Gene Information

human ... SRC(6714)

Other Notes

A -D suffix exists for administrative purposes only.
All -D packages are 100% the same product, same quality, same specification as the package sizes previously sold without a -D.
Concentrated phosphoric acid is approx. 85% H3PO4 (aqueous).


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pictograms

CorrosionExclamation mark

signalword

Danger

Hazard Classifications

Acute Tox. 4 Oral - Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1B

Storage Class

8B - Non-combustible corrosive hazardous materials

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges



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