Product Identification

Product Name

2,3-Dihydroxytoluene

Synonyms

2,3-Dihydroxytoluene
2,3-Toluenediol
2-Hydroxy-6-methylphenol
3-Methyl-1,2-benzenediol
3-Methyl-1,2-dihydroxybenzene
3-Methylpyrocatechol

CAS

488-17-5

Formula

C7H8O2

Molecular Weight

124.13

EINECS

207-672-6

RTECS

UX1910000

RTECS Class

Other

Beilstein/Gmelin

774602

Beilstein Reference

4-06-00-05860

Physical and Chemical Properties

Appearance

Tan crystalline powder crystalline powder.

Solubility in water

Slightly soluble

Melting Point

58 - 62

Boiling Point

241

Vapor Pressure

0.024 (25 C)

pKa/pKb

9.71 (pKa)

Partition Coefficient

1.34

Heat Of Vaporization

49.7 kJ/mol

Heat Of Combustion

-3505 kJ/mol

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.

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

Get medical aid if irritation develops or persists. Wash clothing before reuse. Flush skin with plenty of soap and water.

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.

Handling

Wash thoroughly after handling. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation.

Hazards Identification

Ingestion

Causes gastrointestinal irritation with nausea, vomiting and diarrhea. The toxicological properties of this substance have not been fully investigated. Methylcatechol causes muscular weakness, cardiovascular collapse, and paralysis of the vasomotor centers.

Inhalation

May cause respiratory tract irritation. The toxicological properties of this substance have not been fully investigated.

Skin

May cause skin irritation. Prolonged skin contact may cause injury especially if the skin is abraded.

Eyes

Causes eye irritation.

EC Risk Phrase

R 36/37/38

EC Safety Phrase

S 26 36

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

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.

Fire Fighting Measures

Flash Point

117

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.

Accidental Release Measures

Small spills/leaks

Vacuum or sweep up material and place into a suitable disposal container. Clean up spills immediately, using the appropriate protective equipment. Avoid generating dusty conditions. Provide ventilation.

Stability and Reactivity

Stability

Stable at room temperature in closed containers under normal storage and handling conditions.

Incompatibilities

Strong oxidizing agents - strong bases.

Decomposition

Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.