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Thiourea Structure

Thiourea

Chemical Properties

Melting point 170-176 °C (lit.)
Boiling point 263.89°C (estimate)
Density  1.405
refractive index  1.5300 (estimate)
storage temp.  Store below +30°C.
solubility  water: soluble137g/L at 20°C
form  Crystals
pka -1.0(at 25℃)
Specific Gravity 1.406
color  White to almost white
Odor Odorless
PH Range 5 - 7
PH 6-8 (50g/l, H2O, 20℃)
Water Solubility  13.6 g/100 mL (20 ºC)
Merck  14,9367
BRN  605327
Stability Stable. Incompatible with strong acids, strong bases, strong oxidizing agents, metallic salts, proteins, hydrocarbons. May react violently with acrolein.
InChIKey UMGDCJDMYOKAJW-UHFFFAOYSA-N
LogP -1.050 (est)
FDA 21 CFR 189.190
Substances Added to Food (formerly EAFUS) THIOUREA--PROHIBITED
CAS DataBase Reference 62-56-6(CAS DataBase Reference)
EWG's Food Scores 5-8
NCI Dictionary of Cancer Terms THU
FDA UNII GYV9AM2QAG
Proposition 65 List Thiourea
NIST Chemistry Reference Thiourea(62-56-6)
IARC 3 (Vol. Sup 7, 79) 2001
EPA Substance Registry System Thiourea (62-56-6)

Safety

Symbol(GHS)
Signal wordWarning
Hazard statements H302-H351-H361fd-H411
Precautionary statements P201-P202-P264-P273-P301+P312-P308+P313
Hazard Codes  Xn,N,Xi
Risk Statements  22-40-51/53-63-43-38
Safety Statements  36/37-61
RIDADR  UN 2811 6.1/PG 3
WGK Germany  2
RTECS  YU2800000
Autoignition Temperature 440 °C Dust
TSCA  Yes
HazardClass  6.1
PackingGroup  III
HS Code  29309070
Hazardous Substances Data 62-56-6(Hazardous Substances Data)
Toxicity LD50 orally in wild Norway rats: 1830 mg/kg (Dieke)
NFPA 704:
0
2 0

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