3,4,5-Trimethoxybenzoic acid

Formula
3,4,5-(CH3O)3C6H2COOH
Structure
Description
Off white powder.

Registry Numbers and Inventories.
CAS
118-41-2
EC (EINECS/ELINCS)
204-248-2
R 36/37/38
Beilstein/Gmelin
884655
Beilstein Reference
4-10-00-01996
Swiss Giftliste 1
G-9088
Canada DSL/NDSL
NDSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed

Properties.
Formula
C10H12O5
Formula mass
212.20
Melting point, °C
168 - 170
Boiling point, °C
376
Vapor pressure, mmHg
2.5E-6 (25 C)
Density
1.31 g/cm3 (24.95 C)
Solubility in water
Insoluble
pKa/pKb
4.23 (pKa)
Partition coefficient, pKow
1.90
Heat of vaporization
65.8 kJ/mol

Hazards and Protection.
Storage
Store in a cool, dry place. Store in a tightly closed container.
Handling
Avoid breathing dust, vapor, mist, or gas. Avoid contact with skin and eyes.
Protection
Eyes: Wear chemical goggles. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear a chemical apron.
Respirators
A NIOSH/MSHA approved air purifying dust or mist respirator or European Standard EN 149.
Small spills/leaks
Vacuum or sweep up material and place into a suitable disposal container.
Disposal code
4
Stability
Stable at room temperature in closed containers under normal storage and handling conditions.
Incompatibilities
Strong oxidizing agents.
Decomposition
Carbon monoxide, carbon dioxide.

Fire.
Flash Point,°C
129
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. To extinguish fire use water spray, dry chemical, carbon dioxide, or chemical foam.

Health.
Poison_Class
4
Exposure effects
   Ingestion
May cause gastrointestinal irritation with nausea, vomiting and diarrhea. The toxicological properties of this substance have not been fully investigated.
   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. Get medical aid. Wash mouth out with water.
   Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid if cough or other symptoms appear.
   Skin
Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Get medical aid if irritation develops or persists.
   Eyes
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.

Transport.
HS Code
2918 90 90