Ethylene thiourea

  • ETU
  • 2-Mercaptoimidazoline
  • 2-Imidazolidinethione
  • Imidazolidine-2-thione
Formula
C3H6N2S
Structure
Description
White to pale green crystals or an off-white solid. Odorless when pure, but technical product may have an amine odor.
Uses
It was found that etu was present in 28 different ethylenebisdithiocarbamate commercial products.

Registry Numbers and Inventories.
CAS
96-45-7
EC (EINECS/ELINCS)
202-506-9
EC Index Number
613-039-00-9
EC Class
Toxic for reproduction Category 2; Harmful
R 61 22
RTECS
NI9625000
RTECS class
Agricultural Chemical and Pesticide; Tumorigen; Mutagen; Reproductive Effector; Primary Irritant
UN (DOT)
2811
Merck
13,3837
Beilstein/Gmelin
106275
Beilstein Reference
5-24-01-00165
RCRA
U116
Swiss Giftliste 1
G-6874
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C3H6N2S
Formula mass
102.16
Melting point, °C
196 - 199
Vapor pressure, mmHg
16
Density
1.417 g/cm3
Solubility in water
20 g/L
Partition coefficient, pKow
-0.66

Hazards and Protection.
Storage
Keep container closed when not in use. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
Handling
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use only in a well ventilated area. Minimize dust generation and accumulation. Avoid breathing dust, vapor, mist, or gas. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation. Wash clothing before reuse.
Protection
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
Respirators
A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator's use.
Small spills/leaks
Vacuum or sweep up material and place into a suitable disposal container. Clean up spills immediately, using the appropriate protective equipment. Avoid generating dusty conditions. Provide ventilation.
Disposal code
9
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Acrolein, strong oxidizing agents.
Decomposition
Nitrogen oxides, carbon monoxide, oxides of sulfur, irritating and toxic fumes and gases, carbon dioxide, nitrogen.

Fire.
Flash Point,°C
252
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. This material in sufficient quantity and reduced particle size is capable of creating a dust explosion. Extinguishing media: Use agent most appropriate to extinguish fire. In case of fire use water spray, dry chemical, carbon dioxide, or appropriate foam.
Fire potential
This chemical is combustible.
Health
1
 
Flammability
0
 
 
Reactivity
0
 

Health.
Exposure limit(s)
NIOSH REL: Ca Use encapsulated form. See Appendix A NIOSH IDLH: Potential occupational carcinogen
Carcinogin
N-2, CP65
Poison_Class
1*
Exposure effects
Possible cancer hazard based on tests with laboratory animals. Laboratory experiments have resulted in mutagenic effects. May be rapidly transferred across the placenta and cause adverse fetal effects.
   Ingestion
May cause gastrointestinal irritation with nausea, vomiting and diarrhea. May be harmful if swallowed. Rapidly absorbed when ingested and disseminated throughout the body. Strongly accumulted by thyroid tissue and slowly released.
   Inhalation
Causes irritation of the mucous membrane and upper respiratory tract.
   Skin
Causes skin irritation. May cause allergic sensitization in certain individuals.
   Eyes
Causes eye irritation.

First aid
 
   Ingestion
If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid.
   Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
   Skin
Get medical aid. Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.
   Eyes
Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.

Transport.
UN number
2811
Response guide
USCG CHRIS Code
ETU
 
HS Code
2933 29 90