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239275

Sigma-Aldrich

meta-Phosphoric acid

ACS reagent, chips, 33.5-36.5%

Synonym(s):

Metaphosphoric acid

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5 G
$63.10
100 G
$169.00
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$587.00
2.5 KG
$2,270.00

$63.10

Available to ship onApril 29, 2025Details

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5 G
$63.10
100 G
$169.00
500 G
$587.00
2.5 KG
$2,270.00

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

$63.10

Available to ship onApril 29, 2025Details

Request a Bulk Order

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

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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

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Certificates of Analysis (COA)

Lot/Batch Number
BCCN0051
BCCN0050
BCCM4020
BCCM4021
BCCM4018

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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
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
Gobinath Shanmugam et al.
Redox biology, 12, 937-945 (2017-05-10)
Redox homeostasis regulates key cellular signaling pathways in both physiology and pathology. The cell's antioxidant response provides a defense against oxidative stress and establishes a redox tone permissive for cell signaling. The molecular regulation of the well-known Keap1/Nrf2 system acts
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Questions

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  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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