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NIOSH

2-MERCAPTOIMIDAZOLINE

ICSC: 1148

2-Imidazolidinethione
Ethylene thiourea
ETU
C3H6N2S
Molecular mass: 102.2
ICSC # 1148 		CAS # 96-45-7
RTECS # NI9625000
EC # 613-039-00-9
October 24, 1994 Validated

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.
Powder, water spray, foam, carbon dioxide.
EXPLOSION


EXPOSURE
PREVENT DISPERSION OF DUST! AVOID EXPOSURE OF (PREGNANT) WOMEN!

•INHALATION
Local exhaust or breathing protection.
Refer for medical attention.
•SKIN
Protective gloves. Protective clothing.
Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention.
•EYES
Face shield.
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 sealable containers; if appropriate, moisten first to prevent dusting. Carefully collect remainder, then remove to safe place. Personal protection: self-contained breathing apparatus.
Keep in a well-ventilated room.

Note: E
T symbol
R: 61-22
S: 53-45
ICSC: 1148 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities (C) IPCS CEC 1994. No modifications to the International version have been made except to add the OSHA PELs, NIOSH RELs and NIOSH IDLH values.

2-MERCAPTOIMIDAZOLINE

ICSC: 1148

I

M

P

O

R

T

A

N

T


D

A

T

A

PHYSICAL STATE; APPEARANCE:
WHITE TO PALE GREEN CRYSTALS.

PHYSICAL DANGERS:


CHEMICAL DANGERS:
The substance decomposes on heating or on burning producing toxic and irritating fumes including nitrogen oxides and sulfur oxides.

OCCUPATIONAL EXPOSURE LIMITS:
TLV not established.
MAK:
Carcinogen category: 3B;
(DFG 2004).
OSHA PEL: none
NIOSH REL: Ca Use encapsulated form. See Appendix A
NIOSH IDLH: Ca N.D. See: IDLH INDEX


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

INHALATION RISK:
Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly on spraying or when dispersed, especially if powdered.

EFFECTS OF SHORT-TERM EXPOSURE:


EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
The substance may have effects on the thyroid and liver , resulting in impaired functions . Animal tests show that this substance possibly causes malformations in human babies.

PHYSICAL
PROPERTIES

Melting point: 203-204°C
Solubility in water, g/100 ml at 30°C: 2 (moderate)
Flash point: 252°C
Octanol/water partition coefficient as log Pow: -0.66 (calculated)

ENVIRONMENTAL
DATA


N O T E S

Depending on the degree of exposure, periodic medical examination is suggested. NA-22, NA.22.D, Pennac CRA, Rhodanin S62, Robac 22, Sanceller 22, Sodium-22 Neoprene accelerator, Vulkacit NPV/C, Warecure C are trade names. Card has been partly updated in April 2005. See section Occupational Exposure Limits.

ADDITIONAL INFORMATION



ICSC: 1148 2-MERCAPTOIMIDAZOLINE
(C) IPCS, CEC, 1994
IMPORTANT LEGAL NOTICE: Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH, 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. The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.
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