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HomeProduct name listTetramethylthiourea

Tetramethylthiourea

  • CAS NO.:2782-91-4
  • Empirical Formula: C5H12N2S
  • Molecular Weight: 132.23
  • MDL number: MFCD00008324
  • EINECS: 220-488-0
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2024-11-01 18:09:03
Tetramethylthiourea Structural

What is Tetramethylthiourea?

Chemical properties

COLORLESS TO YELLOW CRYSTALLINE CHUNKS

The Uses of Tetramethylthiourea

Tetramethylthiourea forms BF3 adduct with tetramethylselenourea.

The Uses of Tetramethylthiourea

As a drug.

Definition

ChEBI: Tetramethylthiourea is a member of thioureas.

General Description

White crystals.

Air & Water Reactions

Water soluble.

Reactivity Profile

An organosulfide amide. Organosulfides are 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. Many of these compounds may liberate hydrogen sulfide upon decomposition or reaction with an acid. Organic amides/imides react with azo and diazo compounds to generate toxic gases. Flammable gases are formed by the reaction of organic amides/imides with strong reducing agents. Amides are very weak bases (weaker than water). Imides are less basic yet and in fact react with strong bases to form salts. That is, they can react as acids. Mixing amides with dehydrating agents such as P2O5 or SOCl2 generates the corresponding nitrile. The combustion of these compounds generates mixed oxides of nitrogen (NOx).

Hazard

Moderately toxic by ingestion.

Fire Hazard

Flash point data for Tetramethylthiourea are not available, but Tetramethylthiourea is probably combustible.

Safety Profile

Moderately toxic by ingestion. Questionable carcinogen with experimental carcinogenic and teratogenic data. Human mutation data reported. When heated to decomposition it emits very toxic fumes of NOx and SOx. See also SULFIDES.

Properties of Tetramethylthiourea

Melting point: 75-77 °C (lit.)
Boiling point: 245 °C (lit.)
Density  1.005 (estimate)
refractive index  1.5300 (estimate)
Flash point: 190 °C
storage temp.  2-8°C
solubility  32g/l
pka 1.50±0.50(Predicted)
form  solid
color  Off-White to Pale Beige
Water Solubility  32 g/L (20 ºC)
BRN  1744916
CAS DataBase Reference 2782-91-4(CAS DataBase Reference)
NIST Chemistry Reference Thiourea, tetramethyl-(2782-91-4)
EPA Substance Registry System Tetramethylthiourea (2782-91-4)

Safety information for Tetramethylthiourea

Signal word Warning
Pictogram(s)
ghs
Exclamation Mark
Irritant
GHS07
GHS Hazard Statements H302:Acute toxicity,oral

Computed Descriptors for Tetramethylthiourea

InChIKey MNOILHPDHOHILI-UHFFFAOYSA-N

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