4-Hydroxy-2-methoxybenzaldehyde

  • 2-Methoxy-4-hydroxybenzaldehyde
  • 4-Formyl-3-methoxyphenol
  • 4-Hydroxy-o-anisaldehyde
Formula
C8H8O3
Structure
Description
Cream to light brown solid.

Registry Numbers and Inventories.
CAS
18278-34-7
R 36/37/38
Beilstein/Gmelin
2045122
Beilstein Reference
4-08-00-01754

Properties.
Formula
C8H8O3
Formula mass
152.14
Melting point, °C
156 - 158
Boiling point, °C
273
Solubility in water
Slightly soluble
pKa/pKb
7.40 (pKa)
Partition coefficient, pKow
1.27

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
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
Vacuum or sweep up material and place into a suitable disposal container.
Stability
No data.
Incompatibilities
Oxidizing agents.
Decomposition
Carbon monoxide, carbon dioxide.

Fire.
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Extinguishing media: Use carbon dioxide or dry chemical.

Health.
Exposure effects
   Ingestion
May cause irritation of the digestive tract. May be harmful if swallowed. May cause difficulty in swallowing, stomach distension, possible cerebral swelling and
   Inhalation
Causes respiratory tract irritation. May be harmful if inhaled. May cause ulceration of nasal tissue, insomnia, nervous tremors with numb extremities, chemical pneumonia, shock, unconsciousness, and death.
   Skin
Causes skin irritation. Harmful if absorbed through the skin. Exposure can produce pain, swelling, burns, and possible tissue destruction.
   Eyes
Causes eye irritation.

First aid
 
   Ingestion
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.
   Skin
Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.
   Eyes
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.

Transport.