| CA Index Name | Ethanol, 2,2'-thiobis- | ||
| CAS Registry Number | 111-48-8 | RTECS Number | KM2975000 |
EINECS Number |
203-874-3 | UN Transport Code | |
|---|---|---|---|
| CWC Schedule 2 | |||
| Warning Symbols |
|---|
Xi
|
| Irritating |
| ||||||||||||||||||
| CA Index Name | Ethanol, 2,2'-thiobis- | ||
| CAS Registry Number | 111-48-8 | RTECS Number | KM2975000 |
EINECS Number |
203-874-3 | UN Transport Code | |
|---|---|---|---|
| CWC Schedule 2 | |||
| Warning Symbols |
|---|
|
Xi
|
| Irritating |
| Synonyms: |
Bis(ß-hydroxyethyl) sulfide
Diethanol sulfide ß,ß'-Dihydroxydiethyl sulfide 2,2'-Dihydroxydiethyl sulfide Kromfax Solvent Tedegyl 2,2'-Thiobisethanol Thiodiethylene glycol Thiodiglycol ß-Thiodiglycol 2,2'-Thiodiglycol 3-Thiapentane-1,5-diol |
CHEMICAL AND PHYSICAL PROPERTIES
| Liquid at STP | |||
| Molecular Formula |
C4H10O2S | Molecular Weight |
122.18 |
| Boiling Point |
168° | Melting Point |
-16° |
| Vapor Density |
4.2 | Liquid Density |
1.18 |
| Vapor pressure | <0.2 hPa | ||
|---|---|---|---|
| Flammable; Flash Point 160° | |||
| NFPA Hazard Ratings | ||
|---|---|---|
| FIRE 1 |
HEALTH 2 |
REACTIVITY 0 |
Also refer to 2000 Emergency Response Guidebook (ERG2000) Guide 153.
Health Hazards
Skin/eye irritant.
Risk and Safety Phrases
INDUSTRIAL/COMMERCIAL USES
This is a high production volume chemical (production exceeding 1 million pounds annually in the U.S.)
COMMENTS
Thiodiglycol is a precursor for sulfur-containing blister agents (sulfur mustards such as HD and Q). It is readily prepared from 2-chloroethanol. It was used as a precursor for mustard gas by Iraq and Iran during the Gulf War and both countries smuggled it in from the US. The lengths they went to to obtain it are described here.
Thiodiglycol is one of the in vivo degradation products of sulfur mustard (HD) and its presence in urine is an indicator of exposure to this agent (methods are described in Wils, et al, Journal of Analytical Toxicolology 9(6), 254-257, 1985 and in the U.S. Army Technical Bulletin TB MED 296).
Thiodiglycol may also be found in soil and water samples after mustard use.
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