International Chemical Safety Cards

HEXAMETHYLENETETRAMINE ICSC: 1228
HEXAMETHYLENETETRAMINE
1,3,5,7-Tetraazaadamantane
Methenamine
Hexamine
Urotropin
C6H12N4
Molecular mass: 140.2
CAS # 100-97-0
RTECS # MN4725000
ICSC # 1228
UN # 1328
EC # 612-101-00-2

TYPES OF
HAZARD/
EXPOSURE
ACUTE HAZARDS/
SYMPTOMS
PREVENTION FIRST AID/
FIRE FIGHTING
FIRE Combustible. Gives off irritating or toxic fumes (or gases) in a fire.
NO open flames.
Alcohol-resistant foam, water spray, powder.
EXPLOSION


EXPOSURE
AVOID ALL CONTACT!
IN ALL CASES CONSULT A DOCTOR!
  • INHALATION

  • Ventilation, local exhaust, or breathing protection.
    Fresh air, rest. Refer for medical attention.
  • SKIN
  • Redness. Pain.
    Protective gloves. Protective clothing.
    Remove contaminated clothes. Rinse and then wash skin with water and soap. Refer for medical attention.
  • EYES
  • Redness. Pain.
    Face shield 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. Refer for medical attention.
    SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING
    Sweep spilled substance into containers; if appropriate, moisten first to prevent dusting. Wash away remainder with plenty of water (extra personal protection: self-contained breathing apparatus).
    Separated from strong acids.

    F symbol
    Xn symbol
    R: 11-42/43
    S: (2-)16-22-24-37
    UN Hazard Class: 4.1
    UN Packing Group: III
    SEE IMPORTANT INFORMATION ON BACK
    ICSC: 1228 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

    HEXAMETHYLENETETRAMINE ICSC: 1228

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    PHYSICAL STATE; APPEARANCE:
    HYGROSCOPIC AND COLOURLESS CRYSTALS OR WHITE CRYSTALLINE POWDER , WITH NO ODOUR OR MILD AMMONIA ODOUR.

    PHYSICAL DANGERS:
    Dust explosion possible if in powder or granular form, mixed with air.

    CHEMICAL DANGERS:
    The substance decomposes on heating or on burning producing formaldehyde, ammonia, carbon oxides, hydrogen cyanide and nitrogen oxides. The solution in water is a weak base. Reacts with strong acids producing formaldehyde. Attacks aluminium and zinc.

    OCCUPATIONAL EXPOSURE LIMITS (OELs):
    TLV not established.


    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 when dispersed.

    EFFECTS OF SHORT-TERM EXPOSURE:
    The substance irritates the eyes and the skin.

    EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
    Repeated or prolonged contact may cause skin sensitization. Repeated or prolonged inhalation exposure may cause asthma.
    PHYSICAL
    PROPERTIES
    Sublimation point: about 263°C
    Relative density (water = 1): 1.3
    Solubility in water: good
    Relative vapour density (air = 1): 4.9
    Flash point: 250°C c.c.
    Octanol/water partition coefficient as log Pow: -2.2
    ENVIRONMENTAL
    DATA

    N O T E S
    The substance decomposes to formaldehyde. Also consult ICSC # 0275 (Formaldehyde).
    Transport Emergency Card: TEC (R)-872
    ADDITIONAL INFORMATION


    ICSC: 1228 HEXAMETHYLENETETRAMINE
    © 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.