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| Name |
Sodium phosphotungstate |
EINECS | N/A |
| CAS No. | 51312-42-6 | Density | g/cm3 |
| PSA | 710.58000 | LogP | -3.89080 |
| Solubility | very soluble H2O, alcohol [HAW93] | Melting Point |
350°C |
| Formula | Na4O2•O5P2•O36W12•18H2O | Boiling Point | 158°Cat760mmHg |
| Molecular Weight | 3372.46 | Flash Point | °C |
| Transport Information | N/A | Appearance | Crystalline |
| Safety | Moderately toxic by ingestion. When heated to decomposition it emits toxic fumes of POx and Na2O. See also TUNGSTEN COMPOUNDS. | Risk Codes | 36/37/38-22 |
| Molecular Structure |
|
Hazard Symbols | An oxidizing agent. |
| Synonyms |
phosphotungsticacidsodiumcrystalline;SODIUMPHOSPHOTUNGSTATE |
Sodium phosphotungstate Chemical Properties
Molecule structure of Sodium phosphotungstate (CAS NO.51312-42-6) :
IUPAC Name: trisodium; dioxotungsteniooxy-[(oxido(dioxo)tungstenio)oxy-dioxotungstenio]oxy-dioxotungsten; phosphoric acid; hydrate
Molecular Weight: 2967.038171 g/mol
Molecular Formula: H5Na3O41PW12
Melting Point: 350 °C
Storage Temp.: store at RT.
H-Bond Donor: 4
H-Bond Acceptor: 41
Rotatable Bond Count: 12
Exact Mass: 2966.185579
MonoIsotopic Mass: 2968.184886
Topological Polar Surface Area: 641
Heavy Atom Count: 57
Complexity: 611
Canonical SMILES: O.OP(=O)(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)O[W](=O)=O.[Na+].[Na+].[Na+]
InChIKey: VBTVBWPYDARGPT-UHFFFAOYSA-N
EINECS: 234-716-1
Sodium phosphotungstate Uses
Sodium phosphotungstate (CAS NO.51312-42-6) is used for determination of alkaloids, urea acid and potassium reagents.
Sodium phosphotungstate Toxicity Data With Reference
| 1. | orl-rat LD50:1600 mg/kg | HYSAAV Hygiene and Sanitation: English Translation of Gigiena Sanitariya. 31 (1966),197. | ||
| 2. | orl-mus LD50:700 mg/kg | HYSAAV Hygiene and Sanitation: English Translation of Gigiena Sanitariya. 31 (1966),197. |
Sodium phosphotungstate Consensus Reports
Reported in EPA TSCA Inventory.
Sodium phosphotungstate Safety Profile
Moderately toxic by ingestion. When heated to decomposition it emits toxic fumes of POx and Na2O. See also TUNGSTEN COMPOUNDS.
Hazard Codes: 
Xn
Risk Statements: 36/37/38-22
R36/37/38:Irritating to eyes, respiratory system and skin.
R22:Harmful if swallowed.
Safety Statements: 26-36
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S36:Wear suitable protective clothing.
RIDADR: 1479
WGK Germany: 3
RTECS: TH5775000
HazardClass: 5.1
PackingGroup III
Sodium phosphotungstate Standards and Recommendations
ACGIH TLV: TWA 1 mg(W)/m3; STEL 3 mg(W)/m3
NIOSH REL: TWA 1 mg(W)/m3
Sodium phosphotungstate Specification
Sodium phosphotungstate (CAS NO.51312-42-6) is also called Sodium tungstophosphate ; Tungstophosphoric acid, sodium salt ; Phosphotungstic acid, sodium salt ; Sodium tungsten hydroxide oxide phosphate . Sodium phosphotungstate (CAS NO.51312-42-6) is crystalline.
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