Magnesium silicofluoride

  • Magnesium hexafluorosilicate
  • Magnesium fluosilicate
Formula
MgSiF6
Structure
Description
White, efflorescent, odorless crystals

Registry Numbers and Inventories.
CAS
18972-56-0
RTECS
VV8575000
RTECS class
Agricultural Chemical and Pesticide
UN (DOT)
2853
Beilstein/Gmelin
10094 (G)
Austrailia AICS
Listed
New Zealand
Listed

Properties.
Formula
F6MgSi
Formula mass
166.38
Melting point, °C
>100
Density
1.788 g/cm3
Solubility in water
648 g/L

Hazards and Protection.
Storage
Store in a cool, dry location in a tightly sealed container. Corrosive area.
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
Wear appropriate protective gloves, clothing and goggles.
Respirators
Wear positive pressure self-contained breathing apparatus (SCBA).
Small spills/leaks
Do not touch damaged containers or spilled material unless wearing appropriate protective clothing. Stop leak if you can do it without risk. Cover with plastic sheet to prevent spreading. Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers. DO NOT GET WATER INSIDE CONTAINERS.
Stability
No data.
Incompatibilities
Reacts with acids evolving HF and SiF4, irritating and corrosive gases.

Fire.
Fire fighting
Use method most appropriate to fight surrounding fire.
Fire potential
Non-Combustible
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.

Health.
Exposure effects
The toxological properties of this substance have not been fully investigated.
   Ingestion
Moderately toxic. Slightly irritative.
   Inhalation
Highly toxic, may be fatal if inhaled, swallowed or absorbed through skin. Effects of contact or inhalation may be delayed.
   Skin
Avoid any skin contact. See Inhalation.
   Eyes
See Inhalation.

First aid
 
   Ingestion
Seek medical assistance.
   Inhalation
Move victim to fresh air. Apply artificial respiration if victim is not breathing. Do not use mouth-to-mouth method if victim ingested or inhaled the substance; induce artificial respiration with the aid of a pocket mask equipped with a one-way valve or other proper respiratory medical device. Administer oxygen if breathing is difficult.
   Skin
Remove and isolate contaminated clothing and shoes. Remove material from skin immediately. Immediately flush with running water for at least 20 minutes. For minor skin contact, avoid spreading material on unaffected skin.
   Eyes
Immediately flush with running water for at least 20 minutes.

Transport.
UN number
2853
Response guide
Hazard class
6.1
Packing Group
III