Calcium difluoride
CaF2
Molecular mass: 78.1
ICSC # 1323
CAS # 7789-75-5
RTECS # EW1760000
|
|
Types of Hazard/ Exposure
|
Acute Hazards/ Symptoms
|
Prevention
|
First Aid/
Fire Fighting
|
|
FIRE
|
Not combustible.
|
|
In case of fire in the surroundings: use appropriate extinguishing media.
|
|
Explosion
|
|
|
|
|
|
|
Exposure
|
|
PREVENT DISPERSION OF DUST!
|
|
|
•Inhalation
|
|
Ventilation (not if powder), local exhaust, or breathing protection.
|
Fresh air, rest.
|
|
•Skin
|
|
Protective gloves.
|
Rinse and then wash skin with water and soap.
|
|
•Eyes
|
|
Safety spectacles.
|
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
|
|
•Ingestion
|
Nausea.
Vomiting.
|
Do not eat, drink, or smoke during work.
|
Rinse mouth.
|
|
Spillage Disposal
|
Storage
|
Packaging & Labelling
|
Sweep spilled substance into containers; if appropriate, moisten first to prevent dusting.
Carefully collect remainder,
then remove to safe place.
Personal protection: P2 filter respirator for harmful particles.
|
Separated from mineral
acids.
|
|
|
|
|
Important Data
|
Physical State; Appearance:
COLOURLESS
CRYSTALS
OR
WHITE
HYGROSCOPIC
POWDER
Physical Dangers:
Chemical Dangers:
On combustion, forms toxic fumes of fluoride.
Reacts
with
mineral
acids
to produce
corrosive fumes.
Occupational Exposure Limits:
TLV: (fluorides, as F) 2.5 mg/m3 as TWA; A4 (not classifiable as a human carcinogen); BEI issued; (ACGIH 2004).
MAK: (as F) (Inhalable fraction) 1 mg/m3
Peak limitation category: I(4);
skin absorption (H);
Pregnancy risk group: C;
(DFG 2005).
|
Routes of Exposure:
The substance can be absorbed into the body
by inhalation of its aerosol
and
by ingestion.
Inhalation Risk:
Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly on spraying.
Effects of Short-Term Exposure:
Effects of Long-Term or Repeated Exposure:
|
|
Physical
Properties
|
Boiling point: 2500°C
Melting point: 1403°C
Density: 3.2
g/cm3
|
Solubility in water: none
at 20°C
|
|
Environmental
Data
|
|
|
N O T E S
|
|
Calcium fluoride minerals are mined as fluorite and fluospar.
Card has been partly updated in April and October 2005. See section Occupational Exposure Limits.
|
|
ADDITIONAL INFORMATION
|
|
|
|
ICSC: 1323
|
CALCIUM FLUORIDE
|
|
(C) IPCS, CEC, 1994
|
|
|
IMPORTANT LEGAL NOTICE:
Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH,
the CEC or the IPCS is responsible for the use which might be made of this
information. This card contains the collective views of the IPCS Peer Review Committee and may
not reflect in all cases all the detailed requirements included in national legislation
on the subject. The user should verify compliance of the cards with the relevant legislation
in the country of use.
The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.
|
|
|