Product Identification

Product Name

1,5-Naphthalene diisocyanate

Synonyms

1,5-Naphthyl diisocyanate
1,5-Naphthylene diisocyanate
Isocyanic acid, 1,5-naphthylene ester
Naphthalene diisocyanate
Naphthalene, 1,5-diisocyanate

CAS

3173-72-6

Formula

C12H6N2O2

Molecular Weight

210.2

EINECS

221-641-4

RTECS

NQ9600000

RTECS Class

Tumorigen

Beilstein/Gmelin

2212353

Beilstein Reference

4-13-00-00342

EC Index Number

615-007-00-X

EC Class

Harmful; Irritant; Sensitising; Dangerous for the Environment

Physical and Chemical Properties

Appearance

White to light-yellow crystalline flakes.

Solubility in water

Insoluble

Melting Point

130 - 131

Boiling Point

220 - 221 (40 torr)

Vapor Pressure

.003

Density

1.462 g/cm3

Vapor Density

7.3

First Aid Measures

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

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.

Skin

Remove contaminated clothing. Wash exposed area with soap and water. If symptoms persist, seek medical attention. Launder clothing before reuse.

Eyes

If symptoms develop, immediately move individual away from exposure and into fresh air. Flush eyes gently with water for at least 15 minutes while holding eyelids apart; seek immediate medical attention.

Handling and Storage

Storage

Store in a tightly closed container to prevent moisture contamination.

Handling

Do not reseal if contamination is suspected. Avoid contact with skin and eyes. Do not breath aerosols/vapors.

Hazards Identification

Ingestion

See inhalation.

Inhalation

Symptoms: irritation eyes, nose, throat; respiratory sensitization, cough, pulmonary secretions, chest pain, dyspnea (breathing difficulty); asthma Target Organs: Eyes, respiratory system.

Skin

See inhalation.

Eyes

See inhalation.

UN (DOT)

2206

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.

Respirators

A supplied=air respirator or a SCBA.

Exposure limit(s)

NIOSH REL: TWA 0.040 mg/m3 (0.005 ppm) C 0.170 mg/m3 (0.020 ppm) 10-minute

Poison Class

2

Fire Fighting Measures

Flash Point

155

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.

Accidental Release Measures

Small spills/leaks

If material is molten, allow to solidify. Shovel into open containers. Flakes can be swept and placed into an open container..

Stability and Reactivity

Stability

Stable at normal temperatures and pressures.

Incompatibilities

Strong oxidizing agents.

Decomposition

Oxides of carbon and nitrogen. Traces of HCN.

Transport Information

UN Number

2206

Hazard Class

6.1

Packing Group

II; III