International Chemical Safety Cards

2-METHYL-2-PROPANETHIOL ICSC: 0019
2-METHYL-2-PROPANETHIOL
tert-Butyl mercaptan
(CH3)3CSH
Molecular mass: 90.2
CAS # 75-66-1
RTECS # TZ7660000
ICSC # 0019
TYPES OF
HAZARD/
EXPOSURE
ACUTE HAZARDS/
SYMPTOMS
PREVENTION FIRST AID/
FIRE FIGHTING
FIRE Highly flammable.
NO open flames, NO sparks, and NO smoking.
Powder, AFFF, foam, carbon dioxide.
EXPLOSION Vapour/air mixtures are explosive.
Closed system, ventilation, explosion-proof electrical equipment and lighting. Do NOT use compressed air for filling, discharging, or handling.
In case of fire: keep drums, etc., cool by spraying with water.
EXPOSURE


  • INHALATION
  • Cough. Dizziness. Headache. Nausea. Vomiting.
    Ventilation, local exhaust, or breathing protection.
    Fresh air, rest. Refer for medical attention.
  • SKIN
  • Redness.
    Protective gloves. Protective clothing.
    Remove contaminated clothes. Rinse skin with plenty of water or shower.
  • EYES
  • Redness.
    Safety goggles or eye protection in combination with breathing protection.
    First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
  • INGESTION

  • Do not eat, drink, or smoke during work.
    Rinse mouth.
    SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING
    Evacuate danger area! Collect leaking and spilled liquid in sealable containers as far as possible. Absorb remaining liquid in sand or inert absorbent and remove to safe place. Do NOT wash away into sewer. Carefully collect remainder, then remove to safe place (extra personal protection: self-contained breathing apparatus).
    Fireproof. Separated from strong oxidants, strong bases, strong acids, alkali metals, strong reducing agents.

    SEE IMPORTANT INFORMATION ON BACK
    ICSC: 0019 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

    2-METHYL-2-PROPANETHIOL ICSC: 0019

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    PHYSICAL STATE; APPEARANCE:
    COLOURLESS LIQUID , WITH CHARACTERISTIC ODOUR.

    PHYSICAL DANGERS:
    The vapour is heavier than air and may travel along the ground; distant ignition possible.

    CHEMICAL DANGERS:
    The substance decomposes on burning producing highly toxic gases including sulfur oxides. Reacts with strong acids, strong bases, alkali metals, strong reducing agents, strong oxidants.

    OCCUPATIONAL EXPOSURE LIMITS (OELs):
    TLV not established.
    MAK not established.


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

    INHALATION RISK:
    No indication can be given about the rate in which a harmful concentration in the air is reached on evaporation of this substance at 20C.

    EFFECTS OF SHORT-TERM EXPOSURE:
    The substance irritates the eyes, the skin, and the respiratory tract. The substance may cause effects on the central nervous system , resulting in respiratory failure.

    EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
    Repeated or prolonged contact with skin may cause dermatitis.
    PHYSICAL
    PROPERTIES
    Boiling point: 64C
    Melting point: 0C
    Relative density (water = 1): 0.80
    Vapour pressure, kPa at 20C: 19.0
    Relative vapour density (air = 1): 3.1
    Relative density of the vapour/air-mixture at 20C (air = 1): 1.4
    Flash point: -26C c.c.
    Auto-ignition temperature: see NotesC
    Explosive limits, vol% in air: see Notes
    ENVIRONMENTAL
    DATA

    N O T E S
    Auto-ignition temperature is unknown in literature. Explosive limits are unknown in literature, although the substance is combustible and has a flash point 55C.
    ADDITIONAL INFORMATION


    ICSC: 0019 2-METHYL-2-PROPANETHIOL
    © 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.