Phosphoric acid

Name: Phosphoric acid
Brand: ALDRICH

85 wt. % in H₂O, 99.99% trace metals basis

Synonym(s):

Orthophosphoric acid

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About This Item

Linear Formula:

H₃PO₄

CAS Number:

7664-38-2

Molecular Weight:

98.00

UNSPSC Code:

26111700

NACRES:

NA.23

PubChem Substance ID:

24861303

MDL number:

MFCD00011340

Beilstein/REAXYS Number:

1921286

Product Name

Phosphoric acid, 85 wt. % in H₂O, 99.99% trace metals basis

InChI

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

SMILES string

OP(O)(O)=O

InChI key

NBIIXXVUZAFLBC-UHFFFAOYSA-N

vapor density

3.4 (vs air)

vapor pressure

2.2 mmHg ( 20 °C)
5 mmHg ( 25 °C)

assay

99.99% trace metals basis

form

liquid

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concentration

85 wt. % in H₂O

bp

158 °C (lit.)

mp

~40 °C (lit.)

density

1.685 g/mL at 25 °C (lit.)

application(s)

battery manufacturing

greener alternative category

Enabling,

Quality Level

200

Gene Information

human ... SRC(6714)

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Application

Industrially, phosphoric acid may be used in pharmaceuticals, water softeners.

Phosphoric acid (85 wt. % in H₂O) can be used for a variety of applications, such as:

a medium for corrosion inhibition on mild steel
an activating agent in the preparation of activated carbon
enhancement of electrochemical performance for energy devices
in the development of polymeric membranes for proton exchange membrane based fuel cells

Phosphoric acid has been used as an acid solution for pH adjustment of the fermentation broth in a protocol for the acetone-butanol-ethanol (ABE) fermentation of sugars in a bioreactor.

General description

In aqueous solutions, phosphoric acid behaves as a triprotic acid. The triprotic acid has three ionizable hydrogen atoms, which are lost sequentially.

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Other Notes

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

Packaging

Packaged in clear glass bottles

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

Not applicable

flash_point_c

Not applicable

ppe

Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter

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Preparation and characterization of activated carbon from bamboo by microwave-induced phosphoric acid activation

Liu Q, et al.

Industrial Crops and Products, 31(2), 233-238 (2010)

Physicochemical properties of phosphoric acid doped polybenzimidazole membranes for fuel cells

He R, et al.

Journal of Membrane Science , 277(1-2), 38-45 (2006)

Production of an acetone-butanol-ethanol mixture from Clostridium acetobutylicum and its conversion to high-value biofuels.

Sreekumar S, et al.

Nature Protocols, 10(3), 528-537 (2015)

Activation of graphene aerogel with phosphoric acid for enhanced electrocapacitive performance

Sun X, et al.

Carbon, 92, 1-10 (2015)

Proton conductivity of phosphoric acid doped polybenzimidazole and its composites with inorganic proton conductors