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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:
253-433-4
MDL number:
MFCD00011351
UNSPSC Code:
12352106
PubChem Substance ID:
329747879
NACRES:
NA.21

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

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
GHS05

Signal Word

Danger

Hazard Statements

H314

Hazard Classifications

Eye Dam. 1 - Skin Corr. 1B

Storage Class Code

8B - Non-combustible corrosive hazardous materials

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificates of Analysis (COA)

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Wolfgang Brockner et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 58(9), 1911-1914 (2002-08-08)
SbPO4 was synthesized via a new route by reacting antimony metal with meta-phosphoric acid, (HPO3)n at high temperatures. The Raman and IR spectra of the title compound were recorded and the vibrational modes assigned on the basis of a factor
Victor Pinheiro Feitosa et al.
Journal of dentistry, 41(11), 1068-1080 (2013-09-03)
To compare the effects of two etching procedures using meta-phosphoric (MPA) or ortho-phosphoric acid (OPA) on dentine demineralisation, resin-dentine bonds durability and interface nanoleakage/ultra-morphology. Middle-dentine specimens were etched using 37% OPA (15s) or 40% MPA (60s) and submitted to infrared
B Baghbanzadeh-Nobari et al.
Journal of animal physiology and animal nutrition, 101(5), e266-e277 (2016-11-22)
The effects of supplementing ewe diets with either DL-methionine (DL-Met) or 2-hydroxy-4 (methylthio) butanoic acid isopropyl ester (HMBi) were investigated on ruminal in situ degradability of grain and forage diets, in vivo digestibility, rumen fermentation, blood metabolites and antioxidant status. Six ruminally
Etching of GaN using phosphoric acid.
Shintani A and Minagawa S.
Journal of the Electrochemical Society, 123(5), 706-713 (1976)
M K Dutt
Microscopica acta, 85(2), 175-179 (1981-11-01)
This communication presents a new quick method for selective extraction of RNA from formalin-fixed tissues, such as kidney, intestine, ovary and testis of white rat and liver of rodents, Tatera indica and Millardia meltada and of the frog, Rana tigrina

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