Skip to Content
MilliporeSigma
All Photos(5)

Key Documents

View All Documentation

239275

Sigma-Aldrich

meta-Phosphoric acid

ACS reagent, chips, 33.5-36.5%

Synonym(s):

Metaphosphoric acid

Sign Into View Organizational & Contract Pricing
All Photos(5)

About This Item

Linear Formula:
(HPO3)n
CAS Number:
37267-86-0
MDL number:
MFCD00011351
UNSPSC Code:
12352106
PubChem Substance ID:
329752524
NACRES:
NA.21

grade

ACS reagent

Quality Level

200

form

chips

contains

57.0-63.0% sodium phosphite as stabilizer

concentration

33.5-36.5%

density

2 g/cm3

anion traces

MnO4- reducers: ≤0.02%
chloride (Cl-): ≤0.001%
nitrate (NO3-): ≤0.001%
sulfate (SO42-): ≤0.005%

cation traces

As: ≤1 ppm
Fe: ≤0.005%
heavy metals: ≤0.005% (by ICP)

SMILES string

OP(=O)=O

InChI

1S/HO3P/c1-4(2)3/h(H,1,2,3)

InChI key

UEZVMMHDMIWARA-UHFFFAOYSA-N

Looking for similar products? Visit Product Comparison Guide

General description

meta-Phosphoric acid is a polymer form of phosphoric acid. It is used as a catalyst as well as a reactant in chemical synthesis.

Application

meta-Phosphoric acid can be used as:      
  • A catalyst in combination with InCl3 to synthesize 1,8-dioxooctahydroxanthene derivatives by the reaction of cyclic β-diketones and aldehydes.      
  • A phosphate precursor to synthesize antimony phosphate (SbPO4) by reacting with antimony metal at high temperatures.

pictograms

Corrosion
GHS05

signalword

Danger

hcodes

H314

Hazard Classifications

Eye Dam. 1 - Skin Corr. 1

Storage Class

8B - Non-combustible corrosive hazardous materials

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

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

Sellamuthu S Gounder et al.
PloS one, 7(9), e45697-e45697 (2012-10-03)
Aging promotes accumulation of reactive oxygen/nitrogen species (ROS/RNS) in cardiomyocytes, which leads to contractile dysfunction and cardiac abnormalities. These changes may contribute to increased cardiovascular disease in the elderly. Inducible antioxidant pathways are regulated by nuclear erythroid 2 p45-related factor
Chand Basha Davuljigari et al.
International journal of molecular sciences, 22(11) (2021-07-03)
Acrylamide is a well characterized neurotoxicant known to cause neuropathy and encephalopathy in humans and experimental animals. To investigate the role of nuclear factor erythroid 2-related factor 2 (Nrf2) in acrylamide-induced neuropathy, male C57Bl/6JJcl adult mice were exposed to acrylamide
Namakkal Soorappan Rajasekaran et al.
Antioxidants & redox signaling, 14(6), 957-971 (2010-12-04)
Inheritable missense mutations in small molecular weight heat-shock proteins (HSP) with chaperone-like properties promote self-oligomerization, protein aggregation, and pathologic states such as hypertrophic cardiomyopathy in humans. We recently described that human mutant αB-crystallin (hR120GCryAB) overexpression that caused protein aggregation cardiomyopathy
Shouan Zhu et al.
Connective tissue research, 61(1), 34-47 (2019-09-17)
Purpose: An underlying cause of osteoarthritis (OA) is the inability of chondrocytes to maintain homeostasis in response to changing stress conditions. The purpose of this article was to review and experimentally evaluate oxidative stress resistance and resilience concepts in cartilage
Alicia Madurga et al.
American journal of physiology. Lung cellular and molecular physiology, 306(7), L684-L697 (2014-02-11)
Arrested alveolarization is the pathological hallmark of bronchopulmonary dysplasia (BPD), a complication of premature birth. Here, the impact of systemic application of hydrogen sulfide (H2S) on postnatal alveolarization was assessed in a mouse BPD model. Exposure of newborn mice to
View All Related Papers

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