Product Identification

Product Name

Cobalt oxide

Synonyms

1,2-Benzenedimethanethiol, 4,5-dimethyl-
Cobalt black
Cobalt monoxide
Cobalt oxide
Cobalt(II) oxide
Oxocobalt
Zaffre

CAS

10230-61-2

CAS

1307-96-6

Formula

CoO

Formula

C10H14S2

Molecular Weight

74.930000000000007

Molecular Weight

198.34

EINECS

215-154-6

EINECS

233-551-2

RTECS

GG2800000

RTECS Class

Tumorigen

Merck

12,2507

Beilstein/Gmelin

1307966

Beilstein/Gmelin

13679 (G)

EC Index Number

027-002-00-4

EC Class

Harmful; Sensitising; Dangerous for the Environment

Physical and Chemical Properties

Appearance

Light yellow powder.

Appearance

Olive green, red, gray or black, odorless powder.

Solubility in water

practically insoluble

Melting Point

66 - 67

Melting Point

1933

Boiling Point

310

Density

6.1 g/cm3 (20 C)

Partition Coefficient

3.52

Usage

In pigments for ceramics, glass coloring & decolorization, prepn of cobalt metal catalysts, oxidation catalyst for drying oils, fast drying paints & varnishes, cobalt powder for binder in sintered tungsten carbide, in semiconductors.

First Aid Measures

Ingestion

Never give anything by mouth to an unconscious person. Get medical aid. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.

Ingestion

Seek medical attention. If individual is drowsy or unconscious, do not give anything by mouth; place individual on the left side with the head down. Contact a physician, medical facility, or poison control center for advice about whether to induce vomiting. If possible, do not leave individual unattended.

Inhalation

Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.

Inhalation

If symptoms develop, move individual away from exposure and into fresh air. If symptoms persist, seek medical attention. If breathing is difficult, administer oxygen. Keep person warm and quiet; seek immediate medical attention.

Inhalation

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

Skin

May cause skin irritation.

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.

Skin

Remove contaminated clothing and wash exposed area thoroughly with soap and water. A physician should examine the area if irritation or pain persists.

Eyes

Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.

Eyes

May cause eye irritation.

Eyes

Irrigate exposed eyes with copious amounts of tepid water for at least 15 minutes. If irritation, pain, swelling, lacrimation, or photophobia persist, the patient should be seen in a health care facility.

Handling and Storage

Storage

Kepp container tightly closed. Suitable for any general chemical storage area.

Storage

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

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. Keep container tightly closed. Avoid ingestion and inhalation.

Handling

All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.

Hazards Identification

Ingestion

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

Ingestion

Nausea, vomiting, headaches, dizziness, irritation.

Inhalation

Irritation of upper respiratory tract.

Skin

Irritation. Prolonged contact can cause sensitization.

Eyes

Irritation.

Exposure Controls/Personal Protection

Personal Protection

Chemical splash goggles in compliance with OSHA regulations are advised; however, OSHA regulations also permit other type safety glasses. Whre chemical resistant gloves. To prevent repeated or prolonged skin contact, wear impervious clothing and boots.

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.

Respirators

None is normally required. If required, use a NIOSH/MSHA approved SCBA.

Exposure limit(s)

IDHL: 20 mg/m3

Poison Class

4

Fire Fighting Measures

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.

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. Use agent most appropriate to extinguish fire.

Fire Potential

Specially prepared (the form prepared by reducing the oxides in hydrogen) very fine cobalt dust will catch fire at room temperature in air. Cobalt metal fume and dust

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.

Small spills/leaks

While wearing protective clothing, carefully sweep up and remove.

Stability and Reactivity

Incompatibilities

Oxidizing agents.

Stability

Stable at normal temperatures and pressures.

Stability

Stable under normal temperatures and pressures.

Incompatibilities

Strong oxidizing agents.

Decomposition

Carbon monoxide, oxides of sulfur, irritating and toxic fumes and gases, carbon dioxide, hydrogen sulfide.

Decomposition

None reported.