Product Name

  • Name

    2-HYDROXYTHIOPHENOL

  • EINECS 214-326-8
  • CAS No. 1121-24-0
  • Article Data36
  • CAS DataBase
  • Density 1.255 g/cm3
  • Solubility
  • Melting Point 20 °C
  • Formula C6H6OS
  • Boiling Point 223.7 °C at 760 mmHg
  • Molecular Weight 126.179
  • Flash Point 89.1 °C
  • Transport Information UN 2810
  • Appearance Clear pale green to yellow liquid
  • Safety 23-36/37/39-45-26-36-7/9
  • Risk Codes 36/37/38-34-25-20/21/22
  • Molecular Structure Molecular Structure of 1121-24-0 (2-HYDROXYTHIOPHENOL)
  • Hazard Symbols HarmfulXn, ToxicT, IrritantXi
  • Synonyms Phenol,o-mercapto- (6CI,7CI,8CI);2-Hydroxybenzenethiol;2-Hydroxythiophenol;2-Sulfanylphenol;o-Hydroxybenzenethiol;o-Hydroxythiophenol;o-Mercaptophenol;
  • PSA 59.03000
  • LogP 1.68090

2-Mercaptophenol Chemical Properties

Molecular Structure:

Molecular Formula: C6H6OS
Molecular Weight: 126.1762
IUPAC Name: 2-Sulfanylphenol
Synonyms of Phenol, 2-mercapto- (CAS NO.1121-24-0): 2-Hydroxybenzenothiol ; 2-Hydroxythiophenol ; 2-Mercaptophenol ; 2-Sulfanylphenol ; EINECS 214-326-8 ; o-Hydroxybenzenothiol ; o-Hydroxythiophenol ; o-Mercaptophenol ; Phenol, o-mercapto- (6CI,7CI,8CI)
CAS NO: 1121-24-0
Classification Code: Phenol&Thiophenol&Mercaptan ; Phenoles and thiophenoles
Melting point: 20 °C 
Index of Refraction: 1.642
Molar Refractivity: 36.3 cm3
Molar Volume: 100.4 cm3
Surface Tension: 52.7 dyne/cm
Density: 1.255 g/cm3
Flash Point: 89.1 °C
Enthalpy of Vaporization: 47.89 kJ/mol
Boiling Point: 223.7 °C at 760 mmHg
Vapour Pressure: 0.0636 mmHg at 25°C

2-Mercaptophenol Toxicity Data With Reference

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
rat LD50 oral 178mg/kg (178mg/kg) BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY)

BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD

LUNGS, THORAX, OR RESPIRATION: DYSPNEA		 National Technical Information Service. Vol. OTS0537007,

2-Mercaptophenol Safety Profile

Hazard Codes of Phenol, 2-mercapto- (CAS NO.1121-24-0): IrritantXi,ToxicT,HarmfulXn
Risk Statements: 36/37/38-34-25-20/21/22 
R36/37/38: Irritating to eyes, respiratory system and skin. 
R34: Causes burns. 
R25: Toxic if swallowed. 
R20/21/22: Harmful by inhalation, in contact with skin and if swallowed.
Safety Statements: 23-36/37/39-45-26-7/9 
S23: Do not breathe vapour. 
S36/37/39: Wear suitable protective clothing, gloves and eye/face protection. 
S45: In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S7: Keep container tightly closed. 
S9: Keep container in a well-ventilated place.
RIDADR: 2810
RTECS: SL7375000
Hazard Note: Harmful/Irritant
HazardClass: 6.1
PackingGroup: II

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