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Merck

239275

meta-Phosphoric acid

ACS reagent, chips, 33.5-36.5%

Synonyme(s) :

Metaphosphoric acid

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A propos de cet article

Formule linéaire :
(HPO3)n
Numéro CAS:
NACRES:
NA.21
PubChem Substance ID:
UNSPSC Code:
12352106
MDL number:
Concentration:
33.5-36.5%
Form:
chips
Grade:
ACS reagent
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InChI

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

SMILES string

OP(=O)=O

InChI key

UEZVMMHDMIWARA-UHFFFAOYSA-N

grade

ACS reagent

form

chips

contains

57.0-63.0% sodium phosphite as stabilizer

concentration

33.5-36.5%

Quality Level

pH

2 (33 g/L)

solubility

water: soluble

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)

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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

signalword

Danger

hcodes

Hazard Classifications

Eye Dam. 1 - Skin Corr. 1

Classe de stockage

8B - Non-combustible corrosive hazardous materials

flash_point_f

Not applicable

flash_point_c

Not applicable


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