ICSC 1228 - HEXAMETHYLENETETRAMINE

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HEXAMETHYLENETETRAMINE	ICSC: 1228 (August 2002)
1,3,5,7-Tetraazaadamantane Methenamine Hexamine 1,3,5,7-Tetraazatricyclo(3.3.1.1(3,7))decane

CAS #: 100-97-0

UN #: 1328

EC Number: 202-905-8

	ACUTE HAZARDS	PREVENTION	FIRE FIGHTING
FIRE & EXPLOSION	Combustible. Gives off irritating or toxic fumes (or gases) in a fire. Finely dispersed particles form explosive mixtures in air.	NO open flames. Closed system, dust explosion-proof electrical equipment and lighting. Prevent deposition of dust.	Use water spray, foam, powder.

PREVENT DISPERSION OF DUST!
	SYMPTOMS	PREVENTION	FIRST AID
Inhalation	Cough.	Use 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.	Wear 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 refer for medical attention.
Ingestion	Abdominal pain. Nausea. Vomiting.	Do not eat, drink, or smoke during work.	Rinse mouth. Give a slurry of activated charcoal in water to drink. Refer for medical attention .

SPILLAGE DISPOSAL	CLASSIFICATION & LABELLING
Personal protection: filter respirator for organic gases and particulates adapted to the airborne concentration of the substance. Sweep spilled substance into covered containers. If appropriate, moisten first to prevent dusting. Wash away remainder with plenty of water.	According to UN GHS Criteria Transportation UN Classification UN Hazard Class: 4.1; UN Pack Group: III
STORAGE
Separated from strong acids and strong oxidants. Dry.
PACKAGING

HEXAMETHYLENETETRAMINE

ICSC: 1228

PHYSICAL & CHEMICAL INFORMATION
Physical State; Appearance HYGROSCOPIC COLOURLESS CRYSTALS OR WHITE CRYSTALLINE POWDER. Physical dangers Dust explosion possible if in powder or granular form, mixed with air. Chemical dangers Decomposes on heating and on burning. This produces toxic and corrosive gases including formaldehyde, ammonia, hydrogen cyanide and nitrogen oxides. The solution in water is a weak base. Reacts with strong oxidants and strong acids. Attacks aluminium and zinc.	Formula: C₆H₁₂N₄ Molecular mass: 140.2 Sublimation point: ~260°C Density: 1.33 g/cm³ Solubility in water: good Relative vapour density (air = 1): 4.9 Flash point: 250°C c.c. Auto-ignition temperature: 390°C Octanol/water partition coefficient as log Pow: -2.84

PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
HYGROSCOPIC COLOURLESS CRYSTALS OR WHITE CRYSTALLINE POWDER.

Physical dangers
Dust explosion possible if in powder or granular form, mixed with air.

Chemical dangers
Decomposes on heating and on burning. This produces toxic and corrosive gases including formaldehyde, ammonia, hydrogen cyanide and nitrogen oxides. The solution in water is a weak base. Reacts with strong oxidants and strong acids. Attacks aluminium and zinc.

Formula: C₆H₁₂N₄
Molecular mass: 140.2
Sublimation point: ~260°C
Density: 1.33 g/cm³
Solubility in water: good
Relative vapour density (air = 1): 4.9
Flash point: 250°C c.c.
Auto-ignition temperature: 390°C
Octanol/water partition coefficient as log Pow: -2.84

EXPOSURE & HEALTH EFFECTS
Routes of exposure The substance can be absorbed into the body by inhalation of its aerosol and by ingestion. Effects of short-term exposure The substance is mildly irritating to the eyes and skin.	Inhalation risk Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly when dispersed. Effects of long-term or repeated exposure Repeated or prolonged contact may cause skin sensitization. Repeated or prolonged inhalation may cause asthma.

EXPOSURE & HEALTH EFFECTS

Routes of exposure
The substance can be absorbed into the body by inhalation of its aerosol and by ingestion.

Effects of short-term exposure
The substance is mildly irritating to the eyes and skin.

Inhalation risk
Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly when dispersed.

Effects of long-term or repeated exposure
Repeated or prolonged contact may cause skin sensitization. Repeated or prolonged inhalation may cause asthma.

OCCUPATIONAL EXPOSURE LIMITS
TLV: (inhalable fraction and vapour): 1 mg/m³, as TWA; (DSEN); A4 (not classifiable as a human carcinogen). MAK: sensitization of skin (SH)

ENVIRONMENT

NOTES
The substance may release formaldehyde. See ICSC 0695. Anyone who has shown symptoms of asthma due to this substance should avoid all further contact. The symptoms of asthma 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.

ADDITIONAL INFORMATION

EC Classification
Symbol: F, Xn; R: 11-42/43; S: (2)-16-22-24-37

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