Beryllium fluoride

  • Beryllium difluoride
Formula
BeF2
Structure
Description
Odorless white solid.
Uses
Manufacture of beryllium & beryllium alloys, Manufacture of glass, in nuclear reactors.

Registry Numbers and Inventories.
CAS
7787-49-7
EC (EINECS/ELINCS)
232-118-5
RTECS
DS2800000
RTECS class
Tumorigen
UN (DOT)
1566
Merck
12,1209
Beilstein/Gmelin
95146 (G)
Canada DSL/NDSL
NDSL
US TSCA
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
BeF2
Formula mass
47.00
Melting point, °C
553 - 555
Boiling point, °C
1160
Vapor pressure, mmHg
20 (1127 C)
Odor Threshold Odor threshold Odorless
Density
2.11 g/cm3
Solubility in water
Very soluble
Heat of fusion
2.31 kJ/mol

Hazards and Protection.
Storage
Poison room locked.
Handling
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Avoid contact with skin and eyes. Do not ingest or inhale.
Protection
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves and clothing to prevent skin exposure. Clothing: Wear appropriate protective clothing to minimize contact with skin.
Respirators
Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Small spills/leaks
Sweep up, then place into a suitable container for disposal.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Strong acids.
Decomposition
Hydrogen fluoride.

Fire.
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Extinguishing media: For small fires, use dry chemical, carbon dioxide, water spray or alcohol-resistant foam.
Fire potential
Slightly flammable.
Hazards
Contact with metals may evolve flammable hydrogen gas.
Combustion products
Toxic and irritating vapor of unburned material may form in fire.

Health.
Exposure limit(s)
NIOSH REL: Ca Not to exceed 0.0005 mg/m3 See Appendix A OSHA PEL: TWA 0.002 mg/m3 C 0.005 mg/m3 0.025 mg/m3 [30-minute maximum peak] IDLH Ca [4 mg/m3 (as Be)]
Carcinogin
G-A1, I-1, N-1, CP65
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
Harmful if swallowed. May cause severe gastrointestinal tract irritation with nausea, vomiting and possible burns. The toxicological properties of this substance have not been fully investigated.
   Inhalation
May cause severe irritation of the respiratory tract with sore throat, coughing, shortness of breath and delayed lung edema. The toxicological properties of this substance have not been fully investigated.
   Skin
Contact with skin causes irritation and possible burns, especially if the skin is wet or moist.
   Eyes
May cause eye irritation and possible burns.

First aid
 
   Ingestion
If victim is conscious and alert, give 2-4 cupfuls of milk or water. Get medical aid immediately.
   Inhalation
Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.
   Skin
Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Get medical aid if irritation develops or persists.
   Eyes
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.

Transport.
UN number
1566
Response guide
Hazard class
6.1
Packing Group
II; III
 
USCG CHRIS Code
BEF