Zinc silicofluoride

  • Zinc hexafluorosilicate
  • Zinc fluosilicate
Formula
ZnSiF6
Structure
Description
White crystalline powder.
Uses
Insecticide

Registry Numbers and Inventories.
CAS
16871-71-9
EC (EINECS/ELINCS)
240-894-1
RTECS
VV8754000
RTECS class
Other
UN (DOT)
2855
Merck
12,10267
Beilstein/Gmelin
135850 (G)
EPA OPP
75307
Swiss Giftliste 1
G-7867
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
F6H12O6SiZn
Formula mass
207.47
Density
2.10 g/cm3 (20 C)
Solubility in water
Soluble

Hazards and Protection.
Storage
Keep containers tightly closed in a well ventilated area away from food products. Keep away from heat and water.
Handling
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Protection
NIOSH certified respirator; chemical goggles or face shield; protective gloves hexahydrate NIOSH certified respirator; goggles or face shield; protective gloves.
Respirators
Wear positive pressure self-contained breathing apparatus (SCBA).
Small spills/leaks
Keep sparks, flames, and other sources of ignition away. Keep material out of water sources and sewers. Build dikes to contain flow as necessary.
Stability
No data.
Decomposition
When heated to decomposition it emits toxic fumes of hydrogen fluoride and zinc oxide.

Fire.
Fire fighting
Extinguish fire using agent suitable for type of surrounding fire. (Material itself does not burn or burns with difficulty.) Keep run-off water out of sewers and water sources. Cool all affected containers with flooding quantities of water. Apply water from as far a distance as possible.
Fire potential
Nonflammable.
Combustion products
Toxic and irritating hydrogen fluoride and silicon tetrafluoride are formed in fires.

Health.
Poison_Class
3
Exposure effects
Hyperactive reflexes, painful muscle spasms, weakness and tetanic contractures may be noted due to fluoride induced hypocalcemia. Prenatal fluoride supplementation (2.2 mg NaF or 1 mg fluoride daily) during the last two trimesters of pregnancy has been reported to be safe.
   Ingestion
Epigastric pain, nausea, dysphagia, salivation, hematemesis, and diarrhea may be noted. These effects may be delayed for several hours following exposure. Gi symptoms are noted when 3 to 5 mg/kg of fluoride are ingested.
   Inhalation
Respirations are first stimulated then depressed. Death is usually from respiratory paralysis. Following inhalation, coughing and choking may be noted.
   Skin
Urticaria and pruritus have been reported following exposure to fluoride.
   Eyes
See Inhalation.

First aid
 
   Ingestion
Cause vomiting by giving soapy water or mustard water; have patient drink large quantities of lime water, if necessary, give stimulant such as strong coffee.
   Inhalation
Move to fresh air.
   Skin
Wash with soap and water.
   Eyes
Irrigate exposed eyes with copious amounts of tepid water for at least 15 minutes. If irritation, pain, swelling, lacrimation, or photophobia persist, the patient should be seen in a health care facility.

Transport.
UN number
2855
Response guide
Hazard class
6.1
Packing Group
III
 
USCG CHRIS Code
ZSL
 
Std. Transport #
4925217