Skip to Content
Merck
All Photos(2)

Key Documents

452289

Sigma-Aldrich

Phosphoric acid

greener alternative

≥85 wt. % in H2O, ≥99.999% trace metals basis

Synonym(s):

Orthophosphoric acid

Sign Into View Organizational & Contract Pricing


About This Item

Linear Formula:
H3PO4
CAS Number:
Molecular Weight:
98.00
Beilstein:
1921286
EC Number:
MDL number:
UNSPSC Code:
26111700
PubChem Substance ID:
NACRES:
NA.23

vapor density

3.4 (vs air)

Quality Level

vapor pressure

2.2 mmHg ( 20 °C)
5 mmHg ( 25 °C)

Assay

≥99.999% trace metals basis

form

liquid

greener alternative product characteristics

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

sustainability

Greener Alternative Product

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

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)

Looking for similar products? Visit Product Comparison Guide

General description

We are committed to bringing you Greener Alternative Products, which adhere to one or more of The 12 Principles of Greener Chemistry. This product has been enhanced for energy efficiency. Find details here.

Application

Phosphoric acid 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 of the substrates for energy devices
  • in the development of polymeric membranes for proton exchange membrane (PEM) based fuel cells

Packaging

Packaged in poly bottles

Other Notes

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

Pictograms

CorrosionExclamation mark

Signal Word

Danger

Hazard Statements

Hazard Classifications

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

Storage Class Code

8A - Combustible corrosive hazardous materials

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

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)
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)
Proton conductivity of phosphoric acid doped polybenzimidazole and its composites with inorganic proton conductors
He R, et al.
Journal of Membrane Science , 226(1-2), 169-184 (2003)
Proton-conducting membranes based on benzimidazole polymers for high-temperature PEM fuel cells. A chemical quest
Asensio JA, et al.
Chemical Society Reviews, 39(8), 3210-3239 (2010)
Activation of graphene aerogel with phosphoric acid for enhanced electrocapacitive performance
Sun X, et al.
Carbon, 92, 1-10 (2015)

Articles

The critical technical challenges associated with the commercialization of electric vehicle batteries include cost, performance, abuse tolerance, and lifespan.

The critical technical challenges associated with the commercialization of electric vehicle batteries include cost, performance, abuse tolerance, and lifespan.

The critical technical challenges associated with the commercialization of electric vehicle batteries include cost, performance, abuse tolerance, and lifespan.

The critical technical challenges associated with the commercialization of electric vehicle batteries include cost, performance, abuse tolerance, and lifespan.

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service