meta-Phosphoric acid

Name: meta-Phosphoric acid
Brand: SIGALD

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

Key Documents

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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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This Item	1.00546	1.00565	M6288
Sigma-Aldrich 04103 meta-Phosphoric acid	Supelco 1.00546 meta-Phosphoric acid	Supelco 1.00565 ortho-Phosphoric acid 99%	Sigma-Aldrich M6288 meta-Phosphoric acid
form lumps (glassy)	form solid	form solid	form powder or crystals
composition (HPO₃)_n, 40-50%	composition HPO<SUB>3</SUB>, 40-50% acidimetric , NaPO<SUB>3</SUB>, 50-60% acidimetric	composition -	composition -
impurities ≤0.001% heavy metals (as Pb)	impurities ≤1 ppm As (Arsenic), ≤10 ppm Cd (Cadmium), ≤10 ppm Chloride (Cl), ≤10 ppm Cu (Copper), ≤10 ppm Ni (Nickel), ≤10 ppm Pb (Lead), ≤10 ppm Zn (Zinc), ≤100 ppm Reducing matter (as H₃PO₃), ≤5 ppm Co (Cobalt), ≤5 ppm Mn (Manganese), ≤5 ppm Nitrate (NO₃), ≤50 ppm Fe (Iron)	impurities ≤20 ppm Substances reducing potassium permanganate (as O), ≤20 ppm Volatile acids (as CH₃COOH)	impurities <0.1% Insoluble matter
anion traces chloride (Cl^-): ≤20 mg/kg	anion traces -	anion traces chloride (Cl^-): ≤2 ppm, fluoride (F^-): ≤0.5 ppm, nitrate (NO₃^-): ≤2 ppm, phosphite, hypophosphite (as H₃PO₃): ≤500 ppm	anion traces chloride (Cl^-): <0.001%, sulfate (SO₄^2-): <0.005%
cation traces As: ≤5 mg/kg	cation traces -	cation traces As: ≤1 ppm, Ca: ≤20 ppm, Cd: ≤1 ppm, Co: ≤1 ppm, Cu: ≤1 ppm, Fe: ≤10 ppm, K: ≤5 ppm, Mg: ≤1 ppm, Mn: ≤1 ppm, Na: ≤50 ppm, Ni: ≤1 ppm, Pb: ≤1 ppm, Sb: ≤1 ppm, Zn: ≤1 ppm	cation traces Al: <0.0005%, Ca: ≤0.005%, Cu: <0.0005%, Fe: <0.0005%, K: <0.005%, Mg: ≤0.001%, NH₄⁺: <0.05%, Pb: <0.001%, Zn: <0.0005%

Application

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

Pictograms

GHS05

Signal Word

Danger

Hazard Statements

H314

Precautionary Statements

P260 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338 - P363

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

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Synthesis and vibrational spectrum of antimony phosphate, SbPO4.

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

Etching of GaN using phosphoric acid.

Shintani A and Minagawa S.

Journal of the Electrochemical Society, 123(5), 706-713 (1976)

Dicalcium phosphate (CaHPO4·2H2O) precipitation through ortho- or meta-phosphoric acid-etching: effects on the durability and nanoleakage/ultra-morphology of resin-dentine interfaces.

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

Digestibility, ruminal fermentation, blood metabolites and antioxidant status in ewes supplemented with DL-methionine or hydroxy-4 (methylthio) butanoic acid isopropyl ester.

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

Meta-phosphoric acid-its use in the selective extraction of RNA from fixed tissue sections.

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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