438081
Sigma-Aldrich

Phosphoric acid

ACS reagent, ≥85 wt. % in H₂O

1 of 1

Synonym

Orthophosphoric acid

Molecular Formula

H₃PO₄

Molecular Weight

98.00

CAS Number

7664-38-2

Beilstein Registry Number

1921286

MDL number

MFCD00011340

PubChem Substance ID

24867422

EG/EC Number

231-633-2

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Descriptions

Other Notes

Concentrated phosphoric acid is approx. 85% H₃PO₄ (aqueous).

Packaging

2.5, 6×2.5 L in PVC coated

500, 6×500 mL in PVC coated

Packaged in poly-coated bottles

Properties

grade

ACS reagent

vapor density

3.4 (vs air)

vapor pressure

2.2 mmHg ( 20 °C)

5 mmHg ( 25 °C)

description

crystals

concentration

≥85 wt. % in H₂O

total impurities

Reducing substances, passes test

≤0.001% volatile acids (as CH₃COOH)

color

≤10(APHA)

bp

158 °C(lit.)

mp

~40 °C(lit.)

density

1.685 g/mL at 25 °C(lit.)

anion traces

chloride (Cl^-): ≤3 ppm

nitrate (NO₃^-): ≤5 ppm

sulfate (SO₄^2-): ≤0.003%

cation traces

As: ≤1 ppm

Ca: ≤0.002%

Fe: ≤0.003%

K: ≤0.005%

Mg: ≤0.02%

Mn: ≤0.5 ppm

Na: ≤0.025%

Sb: ≤0.002%

heavy metals (as Pb): ≤0.001%

Gene Information

human ... SRC(6714)

References

reference

RegBook 1 (3), 3247:I

Safety

Hazard Codes

C

Risk Statements

34

Safety Statements

26-45

RIDADR

UN 1805 8/PG 3

WGK Germany

1

RTECS

TB6300000

Related Categories

... Acids & Bases > ACS Grade

... Alternative Energy > Electrolytes

... Synthetic Reagents > Inorganic Acids

MSDS

Specification Sheet

Certificate of Analysis

Certificate of Origin

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438081 (Sigma-Aldrich)

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