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4556-23-4

Name 4-Mercaptopyridine
CAS 4556-23-4
EINECS(EC#) 224-926-1
Molecular Formula C5H5NS
MDL Number MFCD00006422
Molecular Weight 111.16
MOL File 4556-23-4.mol

Chemical Properties

Appearance Yellow to light yellow crystalline powder
Melting point  182-189 °C
Boiling point  194.0±13.0 °C(Predicted)
density  1.161 (estimate)
refractive index  1.5605 (estimate)
storage temp.  0-6°C
solubility  DMSO, Methanol
form  Crystalline Powder
pka pK1:1.43(+1);pK2:8.86(0) (20°C)
color  Yellow to yellow-green or brown
InChIKey FHTDDANQIMVWKZ-UHFFFAOYSA-N
Uses
mercaptopyridine is also known as sodium pyrithione. It is a preservative that is not commoly used.
CAS DataBase Reference 4556-23-4(CAS DataBase Reference)
NIST Chemistry Reference 4-Pyridinethiol(4556-23-4)
Storage Precautions Store under nitrogen

Safety Data

Hazard Codes  Xi
Risk Statements 
R36/37/38:Irritating to eyes, respiratory system and skin .
Safety Statements 
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S37/39:Wear suitable gloves and eye/face protection .
S24/25:Avoid contact with skin and eyes .
WGK Germany  3
RTECS  UT8578000
HS Code  29333990

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