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W290017

Sigma-Aldrich

Phosphoric acid solution

85 wt. % in H2O, FCC, FG

Synonym(s):

Phosphoric acid, Orthophosphoric acid

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About This Item

Linear Formula:
H3PO4
CAS Number:
7664-38-2
Molecular Weight:
98.00
FEMA Number:
2900
Beilstein:
1921286
MDL number:
MFCD00011340
UNSPSC Code:
12164502
PubChem Substance ID:
24901383
E Number:
E 338
NACRES:
NA.21

biological source

synthetic

Quality Level

400

grade

FG
Halal
Kosher

reg. compliance

EU Regulation 1333/2008 & 178/2002
FCC

vapor density

3.4 (vs air)

vapor pressure

2.2 mmHg ( 20 °C)
5 mmHg ( 25 °C)

Assay

84.0-86% (by NaOH, titration)

form

liquid

concentration

85 wt. % in H2O

bp

158 °C (lit.)

mp

~40 °C (lit.)

density

1.685 g/mL at 25 °C (lit.)

anion traces

chloride (Cl-): ≤0.02%passes test
fluoride (F-): ≤10 ppm
sulfate (SO42-): ≤1500 ppm

cation traces

As: ≤1 ppm
Cd: ≤1 ppm
Hg: ≤1 ppm
Pb: ≤1 ppm

application(s)

flavors and fragrances

Documentation

see Safety & Documentation for available documents

food allergen

no known allergens

Organoleptic

faint

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)

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Application


  • A Novel Resistive Sensor Network Utilizing an SAP-Enhanced Ionic Layer and CNT Doping for Multipoint Pressure Measurement.: This article showcases the role of phosphoric acid solutions in creating sensitive and accurate pressure sensors for various technological applications, from healthcare to consumer electronics (Fan et al., 2024).

Other Notes

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

Pictograms

CorrosionExclamation mark
GHS05,GHS07

Signal Word

Danger

Hazard Statements

H290,H302,H314

Hazard Classifications

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

Storage Class Code

8B - Non-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

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Certificates of Analysis (COA)

Lot/Batch Number
SHBQ2450
SHBQ2452
SHBQ2453
SHBN5584
SHBM3033

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Journal of the American Chemical Society, 136(43), 15366-15378 (2014-10-18)
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