Substance profile
Ethylenethiourea
Ethylenethiourea is needles, prisms from alcohol or amyl alcohol with a faint, amine odor.
01 · Identification
What Ethylenethiourea is
Ethylenethiourea is needles, prisms from alcohol or amyl alcohol with a faint, amine odor. Its molecular formula is C3H6N2S and its molecular weight is 102.16 g/mol. It boils at 271 °C, melts at 203 °C, is soluble in water.
Under the GHS it carries the signal word Danger. It is classed as hazardous Air Pollutants (HAPs).
Other names for Ethylenethiourea
- ethylene thiourea
- imidazolidine-2-thione
- 2-imidazoline-2-thiol
02 · GHS classification
Hazards and label elements
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
| Code | Hazard statement |
|---|---|
| H360D | May damage the unborn child. |
| H302 | Harmful if swallowed. |
Precautionary statements: P270, P301, P312, P330
This page lists only the codes assigned to Ethylenethiourea. The full reference lives on the hazard statements hub, the precautionary statements hub and the GHS pictograms hub.
03 · Physical and chemical properties
Ethylenethiourea properties
Every value is shown with the conditions it was measured under and the source it came from. Where sources disagree, all values are listed rather than one being picked — the difference is usually a different form of the substance, not an error.
| Property | Value | Conditions | Source |
|---|---|---|---|
| Boiling point | 271.39 °C (520.5 °F) | range, midpoint shown | NIOSH |
| 271.39 °C (520.5 °F) | range, midpoint shown, at 760 mmHg | CAMEO | |
| Melting point | 203 °C (397.4 °F) | HSDB | |
| 192 °C (377.6 °F) | HSDB | ||
| 200 °C (392 °F) | NIOSH | ||
| Density | 28 g/cm³ | at 20 °C | ICSC |
| Solubility | Soluble in ethanol; slightly soluble in dimethyl sulfoxide; insoluble in ethyl ether, benzene, chloroform | HSDB | |
| Moderately soluble in methanol, ethanol, ethylene glycol, pyridine; insoluble in acetone, ether, chloroform, benzene, ligroin | HSDB | ||
| Soluble in ethanol; insoluble in ethyl ether and benzene. | HSDB | ||
| Vapor pressure | 16 mmHg | NIOSH | |
| 0.9976 mmHg | at 25 °C | ICSC | |
| Flash point | 252.22 °C (486 °F) | NIOSH | |
| 252 °C (485.6 °F) | ICSC | ||
| Lower explosive limit (LEL) | Combustible Solid | NIOSH | |
| Odor threshold | Odorless | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
04 · Handling and storage
Storing and handling Ethylenethiourea
Storage conditions
Store in tightly closed containers in a cool, well ventilated area away from strong oxidizers, acids, acid anhydrides, acrolein. Store in a refrigerator or a cool, dry place. A regulated marked area should be established where this chemical is handled, used, or stored ...
Source: Hazardous Substances Data Bank (HSDB)
Incompatible materials
Strong oxidizers, acids, acid anhydrides, acrolein.
Source: Hazardous Substances Data Bank (HSDB)
Reactivity
ETHYLENE THIOUREA may be sensitive to prolonged exposure to light. Incompatible with acids, diazo and azo compounds, halocarbons, isocyanates, aldehydes, alkali metals, nitrides, hydrides, and other strong reducing agents. Reactions with these materials generate heat and in many cases hydrogen gas. May react with acids to liberate hydrogen sulfide.
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check Ethylenethiourea in the storage compatibility matrix →
Safety Data Sheet
Getting an SDS for Ethylenethiourea
A Safety Data Sheet is written for a product, not for a substance: the supplier of the grade you actually buy issues it, so two suppliers of Ethylenethiourea issue two different sheets. That is why there is no single authoritative SDS for a substance to download — what there is, is the job of collecting the sheets for the products you hold and keeping them current as suppliers revise them.
Nearby
Substances next to Ethylenethiourea
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