(+)-Catechol

  • (+)-Cyanidan-3-ol
  • d-Catechin
  • D-(+)-Catechin
  • 2H-1-Benzopyran-3,5,7-triol, 2-(3,4-dihydroxyphenyl)-3,4-dihydro-, (2R-trans)
  • Catechinic acid
  • Catechuic acid
Formula
C15H14O6
Structure
Description
Green needles.
Uses
Substance is used in dyeing and tanning.

Registry Numbers and Inventories.
CAS
154-23-4
EC (EINECS/ELINCS)
205-825-1
RTECS
DJ3450000
Merck
12,1950
Beilstein/Gmelin
92757
Beilstein Reference
5-17-08-00447
Swiss Giftliste 1
G-5591
Korea ECL
Listed

Properties.
Formula
C15H14O6
Formula mass
290.27
Melting point, °C
308.5
Boiling point, °C
629
Vapor pressure, mmHg
1.1E-16 (25 C)
Density
1.593 g/cm3
Solubility in water
Slightly soluble
pKa/pKb
9.54 (pKa)
Partition coefficient, pKow
0.491
Heat of vaporization
97.85 kJ/mol

Hazards and Protection.
Storage
Keep away from heat and sources of ignition. Ground all equipment containing material. Keep container tightly closed in a cool, well-ventilated area.
Protection
Wear splash goggles, lab coat and gloves.
Respirators
Dust respirator.
Small spills/leaks
Use appropriate tools to put the spilled solid in a waste disposal container. Finish cleaning by spreading water on the contaminated surface and dispose of according to local and regional authority.
Stability
Stable at normal temperatures and pressures.

Fire.
Flash Point,°C
334.3
Fire fighting
Extinguish using dry chemical powder, water spray or foam.
Fire potential
May be combustible at high temperature.
Health
2
 
Flammability
1
 
 
Reactivity
0
 

Health.
Poison_Class
4
Exposure effects
Causes irritation of the eyes, skin, and respiratory tract.

First aid
 
   Ingestion
Do NOT induce vomiting unless directed to do so by medical personnel. Never give anything by mouth to an unconscious person. Loosen tight clothing, such as a collar, tie, belt or waist band. Get medical attention.
   Inhalation
Remove to fresh air. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Seek medical attention.
   Skin
Wash with soap and water. Cover irritated area with an emollient.
   Eyes
Immediately flush eyes with water for at least 15 minutes. Get medical attention.

Transport.