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1309-32-6

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Basic Information
CAS No.: 1309-32-6
Name: Cryptohalite ((NH4)2(SiF6))
Molecular Structure:
Molecular Structure of 1309-32-6 (Cryptohalite ((NH4)2(SiF6)))
Formula: F6Si . 2 H4 N
Molecular Weight: 178.19
Synonyms: Cryptohalite(8CI)
Safety: Poison by ingestion and subcutaneous routes. See also HEXAFLUOROSILICATE (2−) DIHYDROGEN and FLUORIDES. When heated to decomposition it emits very toxic fumes of F−, NH3, and NOx.
PSA: 0.00000
LogP: -3.93960
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  • Cryptohalite ((NH4)2(SiF6))

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    Cryptohalite ((NH4)2(SiF6))

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Toxicity Data With Reference

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
frog LDLo subcutaneous 224mg/kg (224mg/kg)   Comptes Rendus des Seances de la Societe de Biologie et de Ses Filiales. Vol. 124, Pg. 133, 1937.
guinea pig LDLo oral 150mg/kg (150mg/kg)   Comptes Rendus des Seances de la Societe de Biologie et de Ses Filiales. Vol. 124, Pg. 133, 1937.
rat LDLo oral 100mg/kg (100mg/kg)   National Academy of Sciences, National Research Council, Chemical-Biological Coordination Center, Review. Vol. 5, Pg. 27, 1953.

Safety Profile

Poison by ingestion and subcutaneous routes. See also HEXAFLUOROSILICATE (2−) DIHYDROGEN and FLUORIDES. When heated to decomposition it emits very toxic fumes of F−, NH3, and NOx.

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: (Fluorides, Inorganic) TWA 2.5 mg(F)/m3

Specification

Product Name: Cryptohalite (CAS NO.1309-32-6)


Molecular Formula: F6Si•2H4N
Molecular Weight: 178.19g/mol
Mol File: 1309-32-6.mol