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Name Sodium fluorosilicate
EINECS240-934-8
CAS No. 16893-85-9
Density2.68 g/mL at 25 °C(lit.)
PSA0.00000
LogP2.14040
SolubilitySlightly soluble in water. Solubility increases with temperature. Insoluble in alcoholSlightly soluble in water. Insoluble in alcohol.
Melting Pointmelts at red heat, decomposing [MER06]
FormulaF₆Na₂Si
Boiling Point620℃[at 101 325 Pa]
Molecular Weight188.06
Flash PointN/A
Transport InformationUN 2674 6.1/PG 3
Appearancewhite crystalline powder
Safety26-45
Risk Codes23/24/25
Molecular Structure
Hazard SymbolsT,Xi
SynonymsT,Xi

Sodium fluorosilicate Chemical Properties

Structure of Sodium fluorosilicate (CAS NO.16893-85-9):

IUPAC Name: disodium hexafluorosilicon(2-)
Empirical Formula: F₆Na₂Si
Molecular Weight: 188.06
EINECS: 240-934-8
Density: 2.68
Stability: Stable. Incompatible with oxidizing agents, water. Moisture sensitive.
Product Categories: Inorganic Chemicals;Inorganics;Analytical Reagents for General Use;Puriss p.a.;Q-S, Puriss p.a.;Metal and Ceramic Science;Salts;Sodium Salts
Synonyms of Sodium fluorosilicate (CAS NO.16893-85-9): Destruxol applex ; Disodium hexafluorosilicate (2-) ; Disodium hexafluorosilicate (8CI)(9CI) ; Disodium silicofluoride ; Ens-zem weevil bait ; Fluorosilicate de sodium ; Natriumhexafluorosilicat ; Natriumsilicofluorid ; Ortho earwig bait ; Ortho weevil bait ; Prodan ; Safsan ;
Salufer ; Silicon sodium fluoride ; Sodium fluosilicate ; Sodium hexafluorosilicate ; Sodium hexafluosilicate ; Sodium silicofluoride ; Sodium silicon fluoride ; Super prodan

Sodium fluorosilicate Uses

Sodium fluorosilicate (CAS NO.16893-85-9) is used as analytical reagent, preservatives, fungicides, also used in the Enamel Industry.

Sodium fluorosilicate Toxicity Data With Reference

1.	skn-rbt 500 mg MLD	FCTOD7 Food and Chemical Toxicology. 20 (1982),563.
2.	eye-rbt 100 mg SEV	FCTOD7 Food and Chemical Toxicology. 20 (1982),573.
3.	eye-rbt 100 mg/4S rns SEV	FCTOD7 Food and Chemical Toxicology. 20 (1982),573.
4.	orl-rat LD50:125 mg/kg	ARSIM* Agricultural Research Service, USDA Information Memorandum. 20 (1966),21.
5.	scu-rat LDLo:70 mg/kg	JPETAB Journal of Pharmacology and Experimental Therapeutics. 39 (1930),246.
6.	orl-rbt LDLo:125 mg/kg	JPETAB Journal of Pharmacology and Experimental Therapeutics. 39 (1930),246.
7.	scu-frg LDLo:448 mg/kg	CRSBAW Comptes Rendus des Seances de la Societe de Biologie et de Ses Filiales. 124 (1937),133.

Sodium fluorosilicate Consensus Reports

Reported in EPA TSCA Inventory.

Sodium fluorosilicate Safety Profile

Safety Information of Sodium fluorosilicate (CAS NO.16893-85-9):
Hazard Codes:T ,Xi
Risk Statements:23/24/25
23/24/25:Toxic by inhalation, in contact with skin and if swallowed
Safety Statements:26-45
26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice
45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible)
RIDADR:UN 2674 6.1/PG 3
WGK Germany:2
RTECS:VV8410000
Hazard Note:Irritant
TSCA:Yes
HazardClass:6.1
PackingGroup:III
Poison by ingestion and subcutaneous routes. A skin and severe eye irritant. An insecticide. When heated to decomposition it emits very toxic fumes of F⁻ and Na₂O.

Sodium fluorosilicate Standards and Recommendations

OSHA PEL: TWA 2.5 mg(F)/m³
ACGIH TLV: TWA 2.5 mg(F)/m³; BEI: 3 mg/g creatinine of fluorides in urine prior to shift; 10 mg/g creatinine of fluorides in urine at end of shift.
NIOSH REL: (Inorganic Fluorides) TWA 2.5 mg(F)/m³
DOT Classification: 6.1; Label: KEEP AWAY FROM FOOD

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