International Chemical Safety Cards

BENZENETHIOL ICSC: 0463
BENZENETHIOL
Thiophenol
Mercaptobenzene
Phenyl mercaptan
C6H6S/C6H5SH
Molecular mass: 110.2
CAS # 108-98-5
RTECS # DC0525000
ICSC # 0463
UN # 2337
EC # #-#
TYPES OF
HAZARD/
EXPOSURE 		ACUTE HAZARDS/
SYMPTOMS 		PREVENTION FIRST AID/
FIRE FIGHTING
FIRE Flammable. Gives off irritating or toxic fumes (or gases) in a fire.
NO open flames, NO sparks, and NO smoking.
Powder, AFFF, foam, carbon dioxide.
EXPLOSION Above 55░C explosive vapour/air mixtures may be formed.
Above 55░C use a closed system, ventilation, and explosion-proof electrical equipment.
In case of fire: keep drums, etc., cool by spraying with water.
EXPOSURE


  • INHALATION
    		• Cough. Headache. Laboured breathing. Nausea. Shortness of breath. Sore throat. Vomiting.
    		Ventilation, local exhaust, or breathing protection.
    		Fresh air, rest. Refer for medical attention.
  • SKIN
    		• Redness. skin burns. Pain. Corrosive. Blurred vision.
    		Protective gloves. Protective clothing.
    		Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention.
  • EYES
    		• Redness. Pain. Blurred vision.
    		Safety goggles,
    		First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
  • INGESTION
    		• Abdominal pain. Nausea. Sore throat. Vomiting.
    		Do not eat, drink, or smoke during work.
    		Rinse mouth. Refer for medical attention.
    SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING
    Collect leaking liquid in sealable containers. Absorb remaining liquid in sand or inert absorbent and remove to safe place. (extra personal protection: self-contained breathing apparatus). (extra personal protection: complete protective clothing including self-contained breathing apparatus).
    		Separated from strong acids, food and feedstuffs.
    		Do not transport with food and feedstuffs.
    UN Hazard Class: 6.1
    UN Subsidiary Risks: 3
    UN Packing Group: II
    SEE IMPORTANT INFORMATION ON BACK
    ICSC: 0463 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

    BENZENETHIOL ICSC: 0463

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    PHYSICAL STATE; APPEARANCE:
     COLOURLESS TO WATER-WHITE LIQUID , WITH CHARACTERISTIC ODOUR.

    PHYSICAL DANGERS:

    CHEMICAL DANGERS:
     The substance decomposes on heating or on contact with acids producing toxic fumes (sulfur oxides and carbon monoxide - see ICSC # 0023). Reacts with strong acids and bases, calcium hypochlorite, alkali metals. Note: Oxidizes on exposure to air.

    OCCUPATIONAL EXPOSURE LIMITS (OELs):
     TLV: 0.5 ppm; 2.3 mg/m3 (as TWA) (ACGIH 1996).


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

    INHALATION RISK:
     A harmful contamination of the air can be reached rather quickly on evaporation of this substance at 20░C.

    EFFECTS OF SHORT-TERM EXPOSURE:
     The substance irritates the eyes, the skin, and the respiratory tract. Inhalation of the substance may cause lung oedema (see Notes). The substance may cause effects on the nervous system. The effects may be delayed.

    EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
     Repeated or prolonged contact with skin may cause dermatitis.
    PHYSICAL
    PROPERTIES
    Boiling point: 168░C
    Melting point: -15░C
    Relative density (water = 1): 1.07
    Solubility in water: none
    		 Vapour pressure, kPa at 18░C: 0.13
    Relative vapour density (air = 1): 3.8
    Relative density of the vapour/air-mixture at 20░C (air = 1): 1.00
    Flash point: <55░C
    ENVIRONMENTAL
    DATA
    N O T E S
    Auto-ignition temperature is unknown in literature. An odour threshold of 0.00094 ppm has been reported. Explosive limits are unknown in literature, although the substance is combustible and has a flash point <55░C. Technical grades are usually contaminated with carbon disulfide which lowers flash point.
    Transport Emergency Card: TEC (R)-61G04
    ADDITIONAL INFORMATION


    ICSC: 0463 BENZENETHIOL
    © 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.