beta-Resorcylic acid

  • Coupler 320
  • 4-Carboxyresorcinol
  • 2,4-DHBA
  • 2,4-Dihydroxybenzoic acid
  • p-Hydroxysalicylic acid
  • 4-Hydroxysalicylic acid
Formula
2,4-(OH)2C6H3COOH
Structure
Description
White to off-white crystalline powder.
Uses
Intermediate for dyestuffs and drugs.

Registry Numbers and Inventories.
CAS
89-86-1
EC (EINECS/ELINCS)
201-946-9
R 36/37/38
RTECS
VH3708050
RTECS class
Reproductive Effector
Merck
12,8325
Beilstein/Gmelin
1946213
Beilstein Reference
4-10-00-01420
Canada DSL/NDSL
NDSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed

Properties.
Formula
C7H6O4
Formula mass
154.12
Melting point, °C
218 - 220
Boiling point, °C
390
Vapor pressure, mmHg
9E-7 (25 C)
Density
1.54 g/cm3
Solubility in water
Very soluble
pKa/pKb
3.32 (pKa)
Partition coefficient, pKow
1.60
Heat of vaporization
67.4 kJ/mol
Heat of combustion
-2834 kJ/mol

Hazards and Protection.
Storage
Store in a cool, dry, well-ventilated area away from incompatible substances. Keep containers tightly closed.
Handling
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. 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
Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Small spills/leaks
Clean up spills immediately, using the appropriate protective equipment. Sweep up, then place into a suitable container for disposal. Provide ventilation.
Disposal code
4
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Strong oxidizing agents - strong bases.
Decomposition
Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.

Fire.
Flash Point,°C
204
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. To extinguish fire, use water, dry chemical, chemical foam, or alcohol-resistant foam.

Health.
Exposure effects
   Ingestion
May cause irritation of the digestive tract.
   Inhalation
May cause respiratory tract irritation. May cause irritation of the mucous membranes.
   Skin
Causes skin irritation.
   Eyes
Causes 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
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
   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