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Tungstophosphoric acid hydrate

for analysis EMSURE®

Synonym(s):

Tungstophosphoric acid hydrate, Phosphotungstic acid

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About This Item

Linear Formula:
H3[P(W3O10)4] · x H2O
CAS Number:
12501-23-4
Molecular Weight:
2880.05 (anhydrous basis)
MDL number:
MFCD00149915
UNSPSC Code:
12352301
EC Index Number:
215-682-7
NACRES:
NA.21

Quality Level

300

product line

EMSURE®

form

solid

potency

3300 mg/kg LD50, oral (Rat)

loss

≤17% loss on ignition, 750 °C

pH

1.3 (20 °C, 20 g/L in H2O)

mp

107 °C

solubility

water: soluble at 20 °C

bulk density

960 kg/m3

anion traces

chloride (Cl-): ≤50 ppm
sulfate (SO42-): ≤100 ppm

cation traces

Cu: ≤10 ppm
Fe: ≤20 ppm
K: ≤200 ppm
Na: ≤200 ppm
Pb: ≤20 ppm

storage temp.

15-25°C

InChI

1S/H3O4P.H2O.36O.12W/c1-5(2,3)4;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;/h(H3,1,2,3,4);1H2;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

InChI key

AVFBYUADVDVJQL-UHFFFAOYSA-N

Related Categories

Application


  • Calixarene based portable sensor for the direct assay of indiscriminate ephedrine content of weight loss herbal preparations.: Tungstophosphoric acid hydrate is utilized as a proton conductor in the development of a calixarene-based sensor, enabling precise detection of ephedrine in herbal products, showcasing its application in analytical chemistry for public health safety (Wahba et al., 2021).

  • A New Solid-State Proton Conductor: The Salt Hydrate Based on Imidazolium and 12-Tungstophosphate.: This article presents tungstophosphoric acid hydrate as a key component in a novel solid-state proton conductor, offering significant advancements in materials science for fuel cells and other energy applications (Martinelli et al., 2021).

  • Location, acid strength, and mobility of the acidic protons in Keggin 12-H3PW12O40: a combined solid-state NMR spectroscopy and DFT quantum chemical calculation study.: The research investigates the acidic properties and proton mobility of tungstophosphoric acid hydrate using advanced NMR and DFT techniques, providing valuable insights for catalysis and materials science (Yang et al., 2005).

Linkage

Replaces: PX1055; PX1055-4

Analysis Note

Chloride (Cl): ≤ 50 ppm
Sulfate (SO₄): ≤ 100 ppm
Cu (Copper): ≤ 10 ppm
Fe (Iron): ≤ 20 ppm
K (Potassium): ≤ 200 ppm
Na (Sodium): ≤ 200 ppm
Pb (Lead): ≤ 20 ppm
Loss on ignition (750 °C): ≤ 17 %

Legal Information

EMSURE is a registered trademark of Merck KGaA, Darmstadt, Germany

Signal Word

Danger

Hazard Statements

H302 - H314 - H411

Hazard Classifications

Acute Tox. 4 Oral - Aquatic Chronic 2 - Eye Dam. 1 - Skin Corr. 1C

Storage Class Code

8B - Non-combustible, corrosive hazardous materials

WGK

WGK 2

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificates of Analysis (COA)

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