Beryllium & beryllium compounds (as Be)

Synonyms & Trade Names
Beryllium metal
CAS No.
7440-41-7 (metal)
RTECS No.
DOT ID & Guide
1566 154(compounds)
1567 134(powder)
Formula
Be (metal)
Conversion
IDLH
Ca [4 mg/m³ (as Be)]
See: 7440417
Exposure Limits
NIOSH REL
Ca See Appendix A
OSHA PEL
TWA 0.0002 mg/m³
STEL 0.002 mg/m³ (15 minutes)
Measurement Methods
NIOSH 7102 , 7300 , 7301 , 7303 , 9102;
OSHA ID125G , ID206
See: NMAM or OSHA Methods
Physical Description
Metal: A hard, brittle, gray-white solid.
Molecular Weight
9.0
Boiling Point
4532°F
Melting Point
2349°F
Solubility
Insoluble
Vapor Pressure
0 mmHg (approx)
Ionization Potential
NA
Specific Gravity
1.85 (metal)
Flash Point
NA
Upper Exposive Limit
NA
Lower Explosive Limit
NA
Metal: Noncombustible Solid in bulk form, but a slight explosion hazard in the form of a powder or dust.
Incompatibilities & Reactivities
Acids, caustics, chlorinated hydrocarbons, oxidizers, molten lithium
Exposure Routes
inhalation, skin and/or eye contact
Symptoms
Berylliosis (chronic exposure): anorexia, weight loss, lassitude (weakness, exhaustion), chest pain, cough, clubbing of fingers, cyanosis, pulmonary insufficiency; irritation eyes; dermatitis; [potential occupational carcinogen]
Target Organs
Eyes, skin, respiratory system
Cancer Site
[lung cancer]
Personal Protection/Sanitation
(See protection codes)
Skin:Prevent skin contact
Eyes:Prevent eye contact
Wash skin:Daily
Remove:When wet or contaminated
Change:Daily
Provide:Eyewash
First Aid
(See procedures)
Eye:Irrigate immediately

Breathing:Fresh air
Respirator Recommendations

OSHA

Up to 0.002 mg/m3


(APF = 10) Any air-purifying full-facepiece respirator equipped with an N95, R95, or P95 filter. The following filters may also be used: N99, R99, P99, N100, R100, P100.
Click here for information on selection of N, R, or P filters. 

Up to 0.005 mg/m3:

(APF = 25) Any powered air-purifying full facepiece respirator equipped wiht a hood or helmet and a high efficiency (HEPA) filter

(APF = 25) Any continuous flow supplied-air respirator equipped with a hood or helmet

Up to 0.01 mg/m3:


(APF = 50) Any air-purifying, full-facepiece respirator with an N100, R100, or P100 filter.
Click here for information on selection of N, R, or P filters. 


(APF = 50) Any powered, air-purifying respirator with a tight-fitting facepiece and a high-efficiency particulate filter
(APF = 50) Any supplied-air respirator with a full facepiece
(APF = 50) Any self-contained breathing apparatus with a full facepiece

 

Up to 0.4 mg/m3:


(APF = 2000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode

Emergency or planned entry into unknown concentrations or IDLH conditions:
(APF = 10,000) Any self-contained breathing apparatus that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode
(APF = 10,000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode in combination with an auxiliary self-contained positive-pressure breathing apparatus

Escape:


(APF = 50) Any air-purifying, full-facepiece respirator with an N100, R100, or P100 filter.
Click here for information on selection of N, R, or P filters. 


Any appropriate escape-type, self-contained breathing apparatus

Important additional information about respirator selection

See also
INTRODUCTION   ICSC CARD: 0226   MEDICAL TESTS: 0025
Page last reviewed: May 21, 2019