International Chemical Safety Cards

SODIUM SELENITE ICSC: 0698
SODIUM SELENITE
Disodium selenite
Selenious acid, disodium salt
Disodium selenium trioxide
Na2SeO3
Molecular mass: 172.9
CAS # 10102-18-8
RTECS # VS7350000
ICSC # 0698
UN # 2630
EC # 034-002-00-8
TYPES OF
HAZARD/
EXPOSURE 		ACUTE HAZARDS/
SYMPTOMS 		PREVENTION FIRST AID/
FIRE FIGHTING
FIRE Combustible under specific conditions. Gives off irritating or toxic fumes (or gases) in a fire.
NO open flames.
Water spray. Carbon dioxide. Dry sand. Special powder.
EXPLOSION


EXPOSURE
PREVENT DISPERSION OF DUST! STRICT HYGIENE!
IN ALL CASES CONSULT A DOCTOR!
  • INHALATION
    		• Abdominal cramps. Diarrhoea. Dizziness. Headache. Hair loss. laboured breathing. Nausea. Vomiting. Symptoms may be delayed (see Notes).
    		Local exhaust or breathing protection.
    		Fresh air, rest. Artificial respiration if indicated. Refer for medical attention.
  • SKIN
    		• Redness.
    		Protective gloves.
    		Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention. Wear protective gloves when administering first aid.
  • EYES
    		• Redness.
    		Safety goggles. Face shield or eye protection in combination with breathing protection if powder.
    		First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
  • INGESTION
    		• (further see Inhalation).
    		Do not eat, drink, or smoke during work.
    		Rinse mouth. Induce vomiting (ONLY IN CONSCIOUS PERSONS!). Refer for medical attention. Wear protective gloves when inducing vomiting.
    SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING
    Sweep spilled substance into containers. Carefully collect remainder, then remove to safe place. Do NOT let this chemical enter the environment (extra personal protection: P3 filter respirator for toxic particles).
    		Separated from strong acids, food and feedstuffs, bases. Dry. Keep in the dark. Tightly closed.
    		Do not transport with food and feedstuffs.
    T symbol
    R: 23/25-33
    S: 20/21-28-44
    Note: A
    UN Hazard Class: 6.1
    UN Packing Group: I
    SEE IMPORTANT INFORMATION ON BACK
    ICSC: 0698 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities © IPCS CEC 1993

    International Chemical Safety Cards

    SODIUM SELENITE ICSC: 0698

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    PHYSICAL STATE; APPEARANCE:
     HYGROSCOPIC SOLID IN VARIOUS FORMS.

    PHYSICAL DANGERS:

    CHEMICAL DANGERS:
     On contact with hot surfaces or flames this substance decomposes forming toxic gases. The solution in water is a medium strong base. Reacts with water, strong acids causing toxic hazard.

    OCCUPATIONAL EXPOSURE LIMITS (OELs):
     TLV (as Se): ppm; 0.2 mg/m3 (ACGIH 1991-1992).


    		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.

    EFFECTS OF SHORT-TERM EXPOSURE:
     The substance irritates the eyes, the skin and the respiratory tract. Inhalation of powder/dust may cause lung oedema (see Notes). The substance may cause effects on the liver, kidneys, heart, nervous system and gastrointestinal tract. Exposure above the OEL may result in death. Medical observation is indicated.

    EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
     The substance may have effects on the teeth, bone and blood.
    PHYSICAL
    PROPERTIES
    Solubility in water: good
    		 Relative vapour density (air = 1): 5.96
    ENVIRONMENTAL
    DATA
         		This substance may be hazardous to the environment; special attention should be given to water and air. In the food chain important to humans, bioaccumulation takes place, specifically in plants and fish.
    NOTES
    The symptoms of lung oedema often do not become manifest until a few hours have passed and they are aggravated by physical effort. Rest and medical observation are therefore essential. Do NOT take working clothes home. Also consult ICSC # 0072.
    ADDITIONAL INFORMATION


    ICSC: 0698 SODIUM SELENITE
    © IPCS, CEC, 1993
    IMPORTANT LEGAL NOTICE: Neither the CEC or the IPCS nor any person acting on behalf of 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.