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04103

Sigma-Aldrich

meta-Phosphoric acid

100%, lumps (glassy)

Synonym(s):

Metaphosphoric acid

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About This Item

Linear Formula:
(HPO3)n
EC Number:
MDL number:
UNSPSC Code:
12352106
PubChem Substance ID:
NACRES:
NA.21
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form

lumps (glassy)

composition

(HPO3)n, 40-50%
(NaPO3)n, 50-60%

impurities

≤0.001% heavy metals (as Pb)

anion traces

chloride (Cl-): ≤20 mg/kg

cation traces

As: ≤5 mg/kg
Fe: ≤100 mg/kg

SMILES string

OP(=O)=O
OP(=O)=O

InChI

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

InChI key

UEZVMMHDMIWARA-UHFFFAOYSA-N

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Application

meta-Phosphoric acid can be used as a dehydrating agent in chemical synthesis.

pictograms

Corrosion

signalword

Danger

hcodes

Hazard Classifications

Eye Dam. 1 - Skin Corr. 1B

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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