Product Identification

Product Name

3-Ethoxy-4-hydroxybenzaldehyde

Synonyms

Bourbonal
Ethyl vanillin
Protocatechualdehyde ethyl ether

CAS

121-32-4

Formula

C9H10O3

Molecular Weight

166.18

EINECS

204-464-7

RTECS

CU6125000

RTECS Class

Mutagen; Primary Irritant

Merck

13,3890

Beilstein/Gmelin

1073761

Beilstein Reference

4-08-00-01765

EC Class

harmful

Physical and Chemical Properties

Appearance

Colorless crystals. More intense vanilla odor and taste than vanillin.

Solubility in water

Slightly soluble

Melting Point

75 - 77

Boiling Point

285

Vapor Pressure

0.0009 (25 C)

pKa/pKb

7.91 (pKa)

Partition Coefficient

1.72

Heat Of Vaporization

55.6 kJ/mol

Usage

In perfumery.

Refractive Index

1.434

First Aid Measures

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.

Handling and Storage

Storage

Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Store protected from light.

Handling

Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation. Store protected from light.

Hazards Identification

Inhalation

Causes respiratory tract irritation.

Skin

Causes skin irritation. Standard Draize test: Administration onto the skin (human) = 10 mg/48H (Mild).

Eyes

Causes eye irritation.

Ingestion

May be harmful if swallowed. Causes digestive tract irritation.

Hazards

Combustible

EC Risk Phrase

R 22 36/37/38

EC Safety Phrase

S 26 36/37/39

UN (DOT)

1988

Exposure Controls/Personal Protection

Personal 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.

Exposure Effects

Laboratory experiments have resulted in mutagenic effects.

Poison Class

4

Fire Fighting Measures

Flash Point

119

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 water spray, dry chemical, carbon dioxide, or appropriate foam.

Upper exp. limit

7.8

Lower exp. limit

1

Fire Potential

HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames.

Accidental Release Measures

Small spills/leaks

Clean up spills immediately, using the appropriate protective equipment. Avoid generating dusty conditions. Absorb spill using an absorbent, non-combustible material such as earth, sand, or vermiculite. Provide ventilation.

Stability and Reactivity

Incompatibilities

Strong oxidizing agents, strong bases.

Stability

Unstable; in contact with iron or alkali, it exhibits a red color and loses its flavoring power.

Decomposition

Carbon monoxide, carbon dioxide.

Combustion Products

Fire will produce irritating, corrosive and/or toxic gases.

Transport Information

UN Number

1988

Hazard Class

3

Packing Group

I; II; III

HS Code

2912 42 00