Chemistry informtion about 2,4-Dimethylthiophenol (CAS NO.25550-52-1) is:
IUPAC Name: 3,5-Dimethylbenzenethiol
Synonyms: Thioxylenol ; M-Xylene-4-Thiol ; 4-Mercapto-M-Xylene ; Dimethyl-Benzenethio ; Xylenethiol, Mixed Isomers ; Thioxylenol(Mixedisomers)90+% ; Xylolthiol, Isomerengemisch ; Thioxylenol (Mixed Isomers)
MF: C₈H₁₀S
MW: 138.23
EINECS: 237-100-0 
Density: 1.027 g/cm³
Flash Point: 85 °C
Boiling Point: 216.1 °C at 760 mmHg
Vapour Pressure: 0.209 mmHg at 25°C 
Enthalpy of Vaporization: 43.4 kJ/mol
Refractive Index: n20/D 1.569(lit.)
Storage temp.: Refrigerator
Following is the molecular structure of  2,4-Dimethylthiophenol (CAS NO.25550-52-1) is:

 2,4-Dimethylthiophenol (CAS NO.25550-52-1) has been used as an antidote for cyanide poisoning. It works by generating methemoglobin. This is suitable as an emergency treatment only; treatment must be followed up with sodium thiosulfate or cobalamin. In an animal model, it has shown effectiveness when given intramuscularly.

Safty information about 2,4-Dimethylthiophenol (CAS NO.25550-52-1) :
Hazard Codes:
Xi: Irritant
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.  
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection.
RIDADR: UN 1993 3/PG 3
WGK Germany: 3

General description about 2,4-Dimethylthiophenol (CAS NO.25550-52-1) :
First Aid Measures:
Eyes: Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.
Skin: Get medical aid. Flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes.
Ingestion: Get medical aid. Wash mouth out with water.
Inhalation: Remove from exposure and move to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid. 
Handling and Storage:
Handling: Use spark-proof tools and explosion proof equipment. Avoid breathing dust, vapor, mist, or gas. Avoid contact with skin and eyes.
Storage: Keep away from sources of ignition. Store in a cool, dry place. Store in a tightly closed container.