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Beryllium & beryllium compounds (as Be)																				Related Pages
Synonyms & Trade Names
			Beryllium metal
CAS No.
			7440-41-7 (metal)
	RTECS No.
			DS1750000 (metal)
	DOT ID & Guide
			1566 154(compounds)1567 134(powder)

FormulaBe (metal)
	Conversion
	IDLH
			Ca [4 mg/m3 (as Be)]See: 7440417

Exposure Limits
			NIOSH RELCa See Appendix A
					OSHA PEL TWA 0.0002 mg/m3STEL 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 Weight9.0	
	Boiling Point4532°F
	Melting Point2349°F
	SolubilityInsoluble
	Vapor Pressure0 mmHg (approx)
	Ionization PotentialNA											
Specific Gravity1.85 (metal)	
	Flash PointNA
	Upper Explosive LimitNA
	Lower Explosive LimitNA
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:  October 30, 2019						Content
							source: 	National Institute for Occupational Safety and Health NIOSH Pocket Guide to Chemical Hazards
Introduction
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Appendices
A – NIOSH Potential Occupational Carcinogens
B – Thirteen OSHA-Regulated Carcinogens
C – Supplementary Exposure Limits
D – Substances with No Established RELs
E – OSHA Respirator Requirements for Selected Chemicals
F – Miscellaneous Notes
G – 1989 Air Contaminants Update Project: Exposure Limits NOT in Effect
Type C & CE – Definitions for Type C and Type CE Respirators
Personal Protection and Sanitation Codes
First Aid Procedures Follow NIOSH Facebook
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