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PX1000

o-Phosphoric Acid

Name: o-Phosphoric Acid
Brand: MM

85% W/W

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

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Properties

Product Name

o-Phosphoric Acid 85% W/W, 85% W/W

vapor density

3.4 (vs air)

Quality Level

200

vapor pressure

2.2 mmHg ( 20 °C), 5 mmHg ( 25 °C)

form

liquid

greener alternative product characteristics

Design for Energy Efficiency
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sustainability

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concentration

85% phosphoric acid

impurities

≤0.001% Arsenic (As), ≤0.002% Heavy metals (as Pb)

color

APHA: ≤40

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

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Application

Development and validation of stability indicating UPLC methods for related substances and assay analyses of ricobendazole hydrochloride: This research employs o-Phosphoric acid 85% as a mobile phase component in ultra-performance liquid chromatography (UPLC) to analyze and validate the stability and purity of ricobendazole hydrochloride, crucial for pharmaceutical quality assurance. This method highlights the role of high-purity phosphoric acid in enhancing detection sensitivity and accuracy in pharmaceutical research (Ağtaş Ç, Bellur Atici E, Ayaz Seyhan S, Bilgic Alkaya D, 2024).

Chemometrics-assisted development of a validated LC method for simultaneous estimation of temozolomide and γ-linolenic acid: This study showcases the application of o-Phosphoric acid 85% in liquid chromatography for the simultaneous estimation of temozolomide and γ-linolenic acid within lipidic nanoparticles. It emphasizes the acid′s role in improving chromatographic separation and analysis, critical for the advancement of nanomedicine and drug delivery systems (Beg S, Panda SS, Singh KK, 2022).

Analysis Note

Alkali phosphates: To pass test
Arsenic (As): 0.001% max
Assay: 85-88%
Color (APHA): 40 max
Description: To pass test
Form: Clear liquid
Heavy metals (as Pb): 0.002% max
Identification: To pass test
Nitrate: To pass test
Phosphorous or hypophosphorous acid: To pass test
Solubility: To pass test
Sulfate: To pass test

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