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PX0995

o-Phosphoric Acid

Name: o-Phosphoric Acid
Brand: MM

85% W/W, Meets ACS Specifications, Meets Reagent Specifications for testing USP/NF monographs GR ACS

Synonym(s):

Phosphoric acid, Orthophosphoric 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

MDL number:

MFCD00011340

Beilstein/REAXYS Number:

1921286

Concentration:

85% phosphoric acid

Form:

liquid

Grade:

ACS reagent

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Properties

Product Name

o-Phosphoric Acid 85% W/W, Meets ACS Specifications, Meets Reagent Specifications for testing USP/NF monographs GR ACS

grade

ACS reagent

Quality Level

300

agency

meets USP/NF

vapor density

3.4 (vs air)

vapor pressure

2.2 mmHg ( 20 °C), 5 mmHg ( 25 °C)

form

liquid

greener alternative product characteristics

Design for Energy Efficiency
Learn more about the Principles of Green Chemistry.

sustainability

Greener Alternative Product

concentration

85% phosphoric acid

impurities

≤0.001% Heavy metals (as Pb), ≤0.001% Insoluble matter, ≤0.001% Volatile acids (as acetic acid), ≤0.002% Antimony (Sb), ≤0.002% Calcium (Ca), ≤0.002% Magnesium (Mg), ≤0.003% Iron (Fe), ≤0.003% Sulfate (SO₄), ≤0.005% Potassium (K), ≤0.025% Sodium (Na), ≤0.5 ppm Manganese (Mn), ≤1 ppm Arsenic (As), ≤3 ppm Chloride (Cl), ≤5 ppm Nitrate (NO₃)

color

APHA: ≤10

pH

<0.5 (20 °C, 100 g/L in H₂O)

bp

158 °C (lit.)

mp

~40 °C (lit.)

density

1.685 g/mL at 25 °C (lit.)

greener alternative category

Enabling

shipped in

ambient

storage temp.

room temp

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

Description

General description

We are committed to bringing you Greener Alternative Products, which belong to one of the four categories of greener alternatives. Phosphoric acid-doped polybenzimidazole (PBI) membranes offer a cleaner path to energy by enabling high-temperature fuel cells that efficiently convert hydrogen into electricity with low emissions. Their durability and proton conductivity make them ideal for sustainable power systems. Click here for more information.

Application

Meets ACS Specifications, Meets Reagent Specifications for testing USP/NF monographs GR ACS

PX0995P-5 and PX0995P-1 are packaged in poly coated glass bottles
Click here for printer friendly instructions for adapting a hand pump to the 20L HDPE drum.

Analysis Note

Antimony (Sb): 0.002% max
Arsenic (As): 1ppm max
Assay: 85.0% min
Calcium (Ca): 0.002% max
Chloride (Cl): 3ppm max
Color (APHA): 10 max
Form: Clear liquid
Heavy metals (as Pb): 0.001% max
Insoluble matter: 0.001% max
Iron (Fe): 0.003% max
Magnesium (Mg): 0.002% max
Manganese (Mn): 0.5ppm max
Nitrate (NO3): 5ppm max
Potassium (K): 0.005% max
Reducing substances: To pass test
Sodium (Na): 0.025% max
Sulfate (SO4): 0.003% max
Volatile acids (as acetic acid): 0.001% max

Other Notes

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

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pictograms

GHS05,GHS07

signalword

Danger

hcodes

H290,H302,H314

pcodes

P234 - P270 - P280 - P301 + P312 - P303 + P361 + P353 - P305 + P351 + P338

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

does not flash

flash_point_c