N-ACETYLTHIOUREA Property

Melting point:

165-169 °C(lit.)

Density 

1.240 (estimate)

refractive index 

1.7000 (estimate)

storage temp. 

Store below +30°C.

solubility 

12.8g/l

form 

Crystalline Powder

pka

11.24±0.70(Predicted)

color 

Pale cream

PH

6.0 (173g/l, H2O, 20℃)

BRN 

969960

CAS DataBase Reference

591-08-2(CAS DataBase Reference)

EPA Substance Registry System

1-Acetyl-2-thiourea (591-08-2)

Safety

Hazard Codes 

T

Risk Statements 

25

Safety Statements 

36/37/39-45

RIDADR 

UN 2811 6.1/PG 2

WGK Germany 

3

RTECS 

YR7700000

Hazard Note 

Highly Toxic

TSCA 

Yes

HazardClass 

6.1

PackingGroup 

II

HS Code 

2930909899

Hazardous Substances Data

591-08-2(Hazardous Substances Data)

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H300Fatal if swallowed

Precautionary statements

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P301+P310IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician.

P309IF exposed or if you feel unwell:

P310Immediately call a POISON CENTER or doctor/physician.

N-ACETYLTHIOUREA Chemical Properties,Usage,Production

Chemical Properties

white crystalline powder

Chemical Properties

1-Acetyl-2-thiourea is a white crystalline solid; forming needles

Uses

N-Acetylthiourea is a derivative of Thiourea (T375450)

Definition

ChEBI: N-acetylthiourea is a member of the class of thioureas that is thiourea in which one of the hydrogens is replaced by an acetyl group. It is a member of acetamides and a member of thioureas. It is functionally related to a thiourea.

General Description

White crystalline solid. Noncombustible, but decomposes with heating.

Air & Water Reactions

Slightly soluble in water, soluble in hot water. Hydrolysis occurs rapidly with strong acid/base media.

Reactivity Profile

N-ACETYLTHIOUREA is incompatible with strong oxidizing agents, strong acids and strong bases. Decomposes when heated to give toxic oxides of sulfur and nitrogen.

Health Hazard

TOXIC; inhalation, ingestion or skin contact with material may cause severe injury or death. Contact with molten substance may cause severe burns to skin and eyes. Avoid any skin contact. Effects of contact or inhalation may be delayed. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause pollution.

Fire Hazard

Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. Some are oxidizers and may ignite combustibles (wood, paper, oil, clothing, etc.). Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated.

Potential Exposure

Studied as possible rodenticide; used in organic synthesis.

Shipping

UN2811 Toxic solids, organic, n.o.s., Hazard Class: 6.1; Labels: 6.1-Poisonous materials, Technical Name Required.

Purification Methods

Recrystallise the thiourea from AcOH; the solid is washed with Et2O and dried in air then at 100o. [Zahradnik Collect Czech Chem Commun 24 3678 1959, Beilstein 3 IV 354.]

Incompatibilities

Incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materials, strong bases, strong acids, oxoacids, epoxides.

Waste Disposal

Consult with environmental regulatory agencies for guidance on acceptable disposal practices. Generators of waste containing this contaminant (≥100 kg/mo) must conform with EPA regulations governing storage, transportation, treatment, and waste disposal.