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1.00565

ortho-Phosphoric acid

Name: ortho-Phosphoric acid
Brand: MM

99%, cryst. for analysis EMSURE^®

Synonym(s):

Phosphoric acid, Orthophosphoric acid, o-Phosphoric acid, Orthophosphoric acid

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About This Item

Linear Formula:

H₃PO₄

CAS Number:

7664-38-2

Molecular Weight:

98.00

UNSPSC Code:

12352301

EC Index Number:

231-633-2

NACRES:

NA.21

Beilstein/REAXYS Number:

1921286

MDL number:

MFCD00011340

Assay:

≥99% (acidimetric)

Concentration:

85% phosphoric acid

Form:

solid

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Properties

Product Name

ortho-Phosphoric acid 99%, cryst. for analysis EMSURE^®

vapor density

3.4 (vs air)

Quality Level

300

vapor pressure

2.2 mmHg ( 20 °C)

product line

EMSURE^®

assay

≥99% (acidimetric)

form

solid

potency

2740 mg/kg LD₅₀, skin (Rabbit)

greener alternative product characteristics

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concentration

85% phosphoric acid

impurities

≤20 ppm Substances reducing potassium permanganate (as O), ≤20 ppm Volatile acids (as CH₃COOH)

pH

<0.5 (20 °C, 100 g/L in H₂O)

bp

158 °C (lit.)

solubility

750-850 g/L

density

1.685 g/mL at 25 °C (lit.), 1.84 g/cm³ at 38 °C

anion traces

chloride (Cl^-): ≤2 ppm, fluoride (F^-): ≤0.5 ppm, nitrate (NO₃^-): ≤2 ppm, phosphite, hypophosphite (as H₃PO₃): ≤500 ppm

cation traces

As: ≤1 ppm, Ca: ≤20 ppm, Cd: ≤1 ppm, Co: ≤1 ppm, Cu: ≤1 ppm, Fe: ≤10 ppm, K: ≤5 ppm, Mg: ≤1 ppm, Mn: ≤1 ppm, Na: ≤50 ppm, Ni: ≤1 ppm, Pb: ≤1 ppm, Sb: ≤1 ppm, Zn: ≤1 ppm

greener alternative category

Enabling

storage temp.

2-30°C

InChI

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

InChI key

NBIIXXVUZAFLBC-UHFFFAOYSA-N

Description

General description

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Analysis Note

Assay (acidimetric): ≥ 99 %
Identity: passes test
Chloride (Cl): ≤ 2 ppm
Nitrate (NO₃): ≤ 2 ppm
Phosphite and Hypophosphite (as H₃PO₃): ≤ 500 ppm
Fluoride (F): ≤ 0.5 ppm
As (Arsenic): ≤ 1 ppm
Ca (Calcium): ≤ 20 ppm
Cd (Cadmium): ≤ 1 ppm
Co (Cobalt): ≤ 1 ppm
Cu (Copper): ≤ 1 ppm
Fe (Iron): ≤ 10 ppm
K (Potassium): ≤ 5 ppm
Mg (Magnesium): ≤ 1 ppm
Mn (Manganese): ≤ 1 ppm
Na (Sodium): ≤ 50 ppm
Ni (Nickel): ≤ 1 ppm
Pb (Lead): ≤ 1 ppm
Sb (Antimony): ≤ 1 ppm
Zn (Zinc): ≤ 1 ppm
Volatile acids (as CH₃COOH): ≤ 20 ppm
Substances reducing potassium permanganate (as O): ≤ 20 ppm

Other Notes

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

Legal Information

EMSURE is a registered trademark of Merck KGaA, Darmstadt, Germany

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pictograms

GHS05,GHS07

signalword

Danger

pcodes

P234 - P260 - P280 - P301 + P312 - P303 + P361 + P353 - P305 + P351 + P338

Hazard Classifications

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

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c