Phosphotungstic acid hydrate

SIAL/79690 - for microscopy

Synonym: Tungstophosphoric acid

CAS Number: 12501-23-4
Empirical Formula (Hill Notation): H₃O₄₀PW₁₂ · xH₂O
Molecular Weight: 2880.05 (anhydrous basis)
MDL Number: MFCD00149915
Linear Formula: H₃[P(W₃O₁₀)₄] · xH₂O
Product Type: Chemical

Catalog Number	PKG Qty.	Price


45-79690-25G	25 g	$79.30 1/EA	Add To Favorites
45-79690-100G	100 g	$267.00 1/EA	Add To Favorites
45-79690-500G	500 g	$830.00 1/EA	Add To Favorites

Properties
Descriptions
Safety Info.
Basic Data

anion traces	chloride (Cl^-): ≤50 mg/kg
	sulfate (SO₄^2-): ≤100 mg/kg
application(s)	diagnostic assay manufacturing hematology histology
cation traces	Ca: ≤20 mg/kg
	Cu: ≤5 mg/kg
	Fe: ≤20 mg/kg
	K: ≤50 mg/kg
	Na: ≤50 mg/kg
	Pb: ≤20 mg/kg
	Zn: ≤5 mg/kg
form	powder or crystals
grade	for microscopy
impurities	≤0.002% total nitrogen (N)
InChI	1S/H3O4P.H2O.36O.12W/c1-5(2,3)4;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;/h(H3,1,2,3,4);1H2;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
InChI key	AVFBYUADVDVJQL-UHFFFAOYSA-N
loss	≤15% loss on drying
mp	~95 °C (lit.)
pH	2 (20 °C)
Quality Level	200
SMILES string	O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.OP(O)(O)=O
solubility	water: 0.5 g/10 mL, clear, colorless
storage temp.	room temp

Application:	Phosphotungstic acid hydrate may be used as a staining agent for the transmission electron microscope (TEM) imaging of cetyltrimethylammonium bromide (CTAB) coated gold nanorods.It may be used in the preparation of: Phosphotungstic acid doped ormosil hybrid networks • Niobia supported phosphotungstic acid (PTA) catalysts • Titanium dioxide (TiO2) nanoparticles /phosphotungstic acid (HPW) films.
General description:	Phosphotungstic acid hydrate is a heteropolyacid.It is a reagent suitable to detect alkaloids and nitrogenous bases. It is suitable for manufacturing organic pigments, and additives in the plating industry. It is known to impart water resistance to plastics, adhesives, and cement. It also is suitable as a catalyst for organic reactions.
Other Notes:	Review of the folin phenol method for the quantitative determination of proteins

Symbol	GHS05,GHS07,GHS09
Signal word	Danger
Hazard statements	H302 - H314 - H411
Precautionary statements	P260 - P273 - P280 - P301 + P312 - P303 + P361 + P353 - P305 + P351 + P338
Hazard Codes	C
Risk Statements	34
Safety Statements	26-36/37/39
RIDADR	UN 3260 8 / PGII
WGK Germany	WGK 2
Flash Point(F)	Not applicable
Flash Point(C)	Not applicable

mp	~95 °C (lit.)
Storage Temp.	room temp
UNSPSC	12171500

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