International Chemical Safety Cards

SELENIUM ICSC: 0072
World Health Organization (WHO) International Labour Organization (ILO) United Nations Environmental Programme (UNEP) European Commission National Institute for Occupational Safety and Health (NIOSH)
Se
Atomic mass: 79.0
(powder)
ICSC #    0072
CAS #     7782-49-2
RTECS # VS7700000
UN #        2658
EC #         034-001-00-2
November 24, 2009 Validated
TYPES OF HAZARD/ EXPOSURE ACUTE HAZARDS/ SYMPTOMS PREVENTION FIRST AID/
FIRE FIGHTING
FIRE Not combustible. Gives off irritating or toxic fumes (or gases) in a fire.
NO open flames. NO contact with oxidants.
Foam , powder, carbon dioxide. NO water
EXPLOSION Risk of fire and explosion on contact with oxidants.


EXPOSURE
STRICT HYGIENE!

 •INHALATION Sore throat. Cough. Nasal discharge. Loss of smell. Headache.
Ventilation, local exhaust, or breathing protection.
Fresh air, rest. Refer for medical attention.
 •SKIN Redness.
Protective gloves.
Rinse and then wash skin with water and soap.
 •EYES Redness.
Safety spectacles or eye protection in combination with breathing protection.
Rinse with plenty of water (remove contact lenses if easily possible).
 •INGESTION Garlic breath. Diarrhoea.
Do not eat, drink, or smoke during work.
Rinse mouth. Refer for medical attention.
SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING
Personal protection: particulate filter adapted to the airborne concentration of the substance. Sweep spilled substance into containers; if appropriate, moisten first to prevent dusting. Carefully collect remainder, then remove to safe place. Do NOT let this chemical enter the environment.
Separated from strong oxidants, strong acids, food and feedstuffs . Dry. Store in an area without drain or sewer access. Provision to contain effluent from fire extinguishing.
Airtight. Do not transport with food and feedstuffs.
T symbol
R: 23/25-33-53
S: 1/2-20/21-28-45-61
Signal: Warning
Excl mark-Health haz-Enviro
May cause respiratory irritation
May cause damage to nervous system and gastrointestinal tract
May cause damage to nervous system and gastrointestinal through prolonged or repeated exposure
Very toxic to aquatic life
SEE IMPORTANT INFORMATION ON BACK
ICSC: 0072 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities (C) IPCS CEC 1994. No modifications to the International version have been made except to add the OSHA PELs, NIOSH RELs and NIOSH IDLH values.

International Chemical Safety Cards

SELENIUM ICSC: 0072
I

M

P

O

R

T

A

N

T


D

A

T

A
PHYSICAL STATE; APPEARANCE:
 GREY SOLID IN VARIOUS FORMS

PHYSICAL DANGERS:

CHEMICAL DANGERS:
 Upon heating, toxic fumes are formed. Reacts violently with oxidants and strong acids . Reacts, if in amorphous form, with water at 50°C forming flammable/explosive gas (hydrogen - see ICSC0001) and selenious acids. phous form added peer review Nov. 2009 (HSDB 2008)

OCCUPATIONAL EXPOSURE LIMITS:
 TLV: 0.2 mg/m³ as TWA; (ACGIH 2009).
MAK: 0.05 mg/m³ (Inhalable fraction);
Peak limitation category: II(4); Carcinogen category: 3B; Pregnancy risk group: C;
(DFG 2009).
OSHA PEL*: TWA 0.2 mg/m3 *Note: The PEL also applies to other selenium compounds (as Se) except Selenium hexafluoride.
NIOSH REL*: TWA 0.2 mg/m3 *Note: The REL also applies to other selenium compounds (as Se) except Selenium hexafluoride.
NIOSH IDLH: 1 mg/m3 (as Se) See: 7782492


ROUTES OF EXPOSURE:
 The substance can be absorbed into the body by inhalation, and by ingestion.

INHALATION RISK:
 A harmful concentration of airborne particles can be reached quickly

EFFECTS OF SHORT-TERM EXPOSURE:
 The substance is irritating to the respiratory tract . The substance may cause effects on the gastrointestinal tract and nervous system ion 9.4.2; also ATSDR; 13723000 y summary)

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
 The substance may have effects on the respiratory tract, gastrointestinal tract and skin.
PHYSICAL
PROPERTIES
Boiling point: 685°C
Melting point: 217°C
Relative density (water = 1): 4.8
 Solubility in water:
none
Vapour pressure, Pa at 20°C: 0.1
ENVIRONMENTAL
DATA
Environmental Hazard placard The substance is very toxic to aquatic organisms. It is strongly advised that this substance does not enter the environment.
N O T E S
Do NOT take working clothes home.
ADDITIONAL INFORMATION


ICSC: 0072 SELENIUM
(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.