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PHOSPHOTUNGSTIC ACID HYDRATE AR
Reagent for microscopy. "Store at 15–25°C"
Tungstophosphoric acid Hydrate
MSDS
DE
EN
FR
KO
PT
ES
TH
TR
COAs
Packings
25 g
(00025)
100 g
(00100)
Print friendly version
Article No.
05266
Grade
AR
Purity
CAS No.
12501-23-4
Molecular Formula
H
3
[P(W
3
O
1
0
)
4
]xH
2
O
Molecular Weight
2880.17
H.S. Code
2811.1990
Shelf Life
60 Months
Physical Properties
Physical state at 20 °C
Solid
Colour
White to yellowish
Odour
Odorless
Melting point/ Freezing point [°C]
95 °C
Solubility in water [% weight]
200 g/100 g water
Specifications
Appearance
White to yellow to beige to grey powder or crystals
Chloride (Cl)
Max 0.005%
Sulphate (SO4)
Max 0.01%
Total nitrogen (N)
Max 0.002%
Lead (Pb)
Max 0.002%
Iron (Fe)
Max 0.002%
Potassium (K)
Max 0.02%
Copper (Cu)
Max 0.001%
Sodium (Na)
Max 0.02%
Loss on ignition (at 750°C)
Max 17%
Safety Information and Hazard Symbols
Symbol: GHS05
Signal Word: Danger
UN No.: 3260
IMCO Class No.: 8
Packing Group: II
Hazardous Statement: H314
Precaution Statement: P280-P305 + P351 + P338-P310
Revision Date:
13-Feb-2026
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PHOSPHOTUNGSTIC ACID HYDRATE