2,3-Cresotic acid

  • o-Homosalicylic acid
  • Cresotinic acid
  • 3-Methylsalicylic acid
  • 2-Hydroxy-3-methylbenzoic acid
  • Benzoic acid, 2-hydroxy-3-methyl-
Formula
C8H8O3
Structure
Description
odorless white - pale pink powder powder
Uses
Substance is used in production of dyes.

Registry Numbers and Inventories.
CAS
83-40-9
EC (EINECS/ELINCS)
201-473-8
EC Class
harmful, irritant
R 22 37/38 41
S 26 36/37/39
RTECS
GP3920000
RTECS class
Drug; Mutagen
Merck
13,2609
Beilstein/Gmelin
2086811
Beilstein Reference
4-10-00-00601
Swiss Giftliste 1
G-8953
Canada DSL/NDSL
NDSL
US TSCA
Listed
Austrailia AICS
Listed
Japan ENCS (MITI)
Listed

Properties.
Formula
C8H8O3
Formula mass
152.16
Melting point, °C
163 - 165
Boiling point, °C
293
Vapor pressure, mmHg
0.0008 (25 C)
Solubility in water
Very soluble
pKa/pKb
3.06 (pKa)
Partition coefficient, pKow
-1.19
Heat of vaporization
56.3 kJ/mol
Heat of combustion
-3681 kJ/mol

Hazards and Protection.
Storage
Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
Handling
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use only in a well ventilated area. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation.
Protection
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
Respirators
A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator's use.
Small spills/leaks
Clean up spills immediately, using the appropriate protective equipment. Avoid generating dusty conditions. Provide ventilation. Cover with dry earth, dry sand, or other non-combustible material followed with plastic sheet to minimize spreading and contact with water.
Stability
Volatile in steam.
Incompatibilities
Acid chlorides, acid anhydrides, strong bases, strong oxidizing agents.
Decomposition
Carbon monoxide, carbon dioxide.

Fire.
Flash Point,°C
145
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Extinguishing media: Use agent most appropriate to extinguish fire. In case of fire, use carbon dioxide, dry chemical powder or appropriate foam.
Health
1
 
Flammability
0
 
 
Reactivity
0
 

Health.
Poison_Class
3
Exposure effects
   Ingestion
Harmful if swallowed.
   Inhalation
May cause respiratory tract irritation.
   Skin
May cause skin irritation.
   Eyes
May cause eye irritation.

First aid
 
   Ingestion
If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately.
   Inhalation
Get medical aid immediately. Remove from exposure to fresh air immediately. If breathing is difficult, give oxygen. DO NOT use mouth-to-mouth respiration. If breathing has ceased apply artificial respiration using oxygen and a suitable mechanical device such as a bag and a mask.
   Skin
Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.
   Eyes
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.

Transport.
HS Code
2918 29 90