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1-(1-NAPHTHYL)-2-THIOUREA Structure

1-(1-NAPHTHYL)-2-THIOUREA

Chemical Properties

Melting point 193 °C
Boiling point 377.6±25.0 °C(Predicted)
Density  1.333
refractive index  1.5500 (estimate)
storage temp.  Poison room
solubility  4.3 and 86 g/L in acetone and triethylene glycol, respectively (Windholz et al., 1983)
pka 13.12±0.70(Predicted)
form  Crystals or Crystalline Powder
color  Grayish to beige-brown
Odor bitter taste
Water Solubility  600 mg/L at 20 °C (quoted, Windholz et al., 1983)
Merck  14,722
BRN  778118
Exposure limits NIOSH REL: TWA 0.3 mg/m3, IDLH 100 mg/m3; OSHA PEL: TWA 0.3 mg/m3
CAS DataBase Reference 86-88-4(CAS DataBase Reference)
IARC 3 (Vol. 30, Sup 7) 1987
EPA Substance Registry System .alpha.-Naphthylthiourea (86-88-4)

Safety Information

Hazard Codes  T+
Risk Statements  28-40
Safety Statements  28-36/37-45-25-23
RIDADR  1651
WGK Germany  2
RTECS  YT9275000
TSCA  Yes
HazardClass  6.1
PackingGroup  I
HS Code  29309090
Hazardous Substances Data 86-88-4(Hazardous Substances Data)
Toxicity Acute oral LD50 for Norwegian rats 6–8 mg/kg (Hartley and Kidd, 1987).
IDLA 100 mg/m3

MSDS

Usage And Synthesis

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