Merck
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8.45501

Sigma-Aldrich

Thiourea

for photovoltaic

Synonym(s):
Thiourea, Thiocarbamide
Empirical Formula (Hill Notation):
CH4N2S
CAS Number:
Molecular Weight:
76.12
MDL number:
EC Index Number:
200-543-5

Quality Level

form

solid

autoignition temp.

440 °C (Dust)

potency

1750 mg/kg LD50, oral (Rat)
>2800 mg/kg LD50, skin (Rabbit)

pH

6-8 (20 °C, 50 g/L in H2O)

mp

169-173 °C

solubility

137 g/L

density

1.405 g/cm3 at 20 °C

bulk density

640 kg/m3

storage temp.

no temp limit

InChI

1S/CH4N2S/c2-1(3)4/h(H4,2,3,4)

InChI key

UMGDCJDMYOKAJW-UHFFFAOYSA-N

Analysis Note

Assay: ≥ 98.0 %
Identity (IR): passes test
Appearance of solution (50 g/l; water): clear to nearly clear and colourless
Appearance (visual): white to off white crystalin powder
Melting point: 174 - 178 °C
Al (Aluminium): ≤ 5 ppm
As (Arsenic): ≤ 5 ppm
Co (Cobalt): ≤ 5 ppm
Cr (Chromium): ≤ 5 ppm
Cu (Copper): ≤ 5 ppm
Fe (Iron): ≤ 5 ppm
Mn (Manganese): ≤ 5 ppm
Ni (Nickel): ≤ 5 ppm
Pb (Lead): ≤ 5 ppm
Sb (Antimony): ≤ 5 ppm
Sn (Tin): ≤ 5 ppm
Zn (Zinc): ≤ 5 ppm
Sulfated ash (600 °C): ≤ 0.1 %
Loss on Drying (105°C): ≤ 0.5 %
Sensitivity to bismuth: passes test

Signal Word

Warning

Hazard Classifications

Acute Tox. 4 Oral - Aquatic Chronic 2 - Carc. 2 - Repr. 2

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

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