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16924-00-8

Name POTASSIUM HEPTAFLUOROTANTALATE(V)
CAS 16924-00-8
EINECS(EC#) 240-986-1
Molecular Formula F7K2Ta
MDL Number MFCD00042369
Molecular Weight 392.13
MOL File 16924-00-8.mol
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Chemical Properties

Appearance White, silky needles. Slightly soluble in cold water; quite soluble in hot water.
Melting point  °Cd ec.)
density  4.56 g/mL at 25 °C(lit.)
vapor pressure  0Pa at 20℃
form  Powder
color  colorless crystals, crystalline
Specific Gravity 4.56
Water Solubility  Decomposes in water. Slightly soluble in hydrogen fluoride.
LogP -1 at 20℃
Uses
Intermediate in preparation of pure tantalum.
CAS DataBase Reference 16924-00-8(CAS DataBase Reference)
EPA Substance Registry System Tantalate(2-), heptafluoro-, dipotassium (16924-00-8)

Safety Data

Hazard Codes  T,Xi
Risk Statements 
R23/25:Toxic by inhalation and if swallowed .
Safety Statements 
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
RIDADR  UN 3288 6.1/PG 3
WGK Germany  1
RTECS  TT1225000
Hazard Note  Irritant
TSCA  Yes
HazardClass  6.1
PackingGroup  III
HS Code  28269090
Safety Profile
Poison by ingestion and intraperitoneal routes. When heated to decomposition it emits toxic fumes of F- and K2O.
Hazardous Substances Data 16924-00-8(Hazardous Substances Data)
Toxicity
mouse,LD50,oral,110mg/kg (110mg/kg),BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLDBEHAVIORAL: MUSCLE WEAKNESSBEHAVIORAL: MUSCLE CONTRACTION OR SPASTICITY),"Novye Dannye Po Toksikologii Redkikh Metalov Ikh Soedinenii," New Data on the Toxicology of Rare Metals and Their Compounds, Izrael'son, Z.I., ed., Moscow, Izdatel'stvo "Meditsina," 196Vol. -, Pg. 115, 1967.

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