Supplier Product Identification Physical and Chemical Properties First Aid Measures Handling and Storage Hazards Identification Exposure Controls/Personal Protection Fire Fighting Measures Accidental Release Measures Stability and Reactivity Transport Information
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Dibenzo-1,4-thiazine(92-84-2)

Supplier Product Identification Physical and Chemical Properties First Aid Measures Handling and Storage Hazards Identification Exposure Controls/Personal Protection Fire Fighting Measures Accidental Release Measures Stability and Reactivity Transport Information

Product Identification

Product Name
Dibenzo-1,4-thiazine
Synonyms
10H-Phenothiazine
Dibenzothiazine
Thiodiphenylamine
CAS
92-84-2
Formula
C12H9NS
Molecular Weight
199.28
EINECS
202-196-5
RTECS
SN5075000
RTECS Class
Agricultural Chemical and Pesticide; Drug; Mutagen; Reproductive Effector; Human Data
Merck
12,7404
Beilstein/Gmelin
143237
Beilstein Reference
4-27-00-01214

Physical and Chemical Properties

Appearance
Greyish-green to greenish-yellow solid, slight odor.
Solubility in water
Insoluble
Melting Point
182 - 185
Boiling Point
371
Vapor Pressure
1E-5 (25 C)
Density
1.34 g/cm3 (20 C)
pKa/pKb
11.48 (pKb)
Partition Coefficient
4.15
Heat Of Vaporization
61.8 kJ/mol
Usage
Manufacture of dyes, parent compound for chlorpromazine & related antipsychotic drugs, polymerization inhibitor, antioxidant.
Saturation Concentration
Nearly zero
Refractive Index
1.6353 (212 C)

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.
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.

Handling and Storage

Storage
Keep away from heat, sparks, and flame. Keep away from sources of ignition. Do not store in direct sunlight. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
Handling
Wash thoroughly after handling. Use only in a well ventilated area. Minimize dust generation and accumulation. Avoid breathing dust, vapor, mist, or gas. Avoid contact with skin and eyes. Avoid contact with heat, sparks and flame. Avoid ingestion and inhalation.

Hazards Identification

Inhalation
Causes respiratory tract irritation. May cause liver and kidney damage. May cause anemia.
Skin
Causes skin irritation. May cause skin sensitization, an allergic reaction, which becomes evident upon re-exposure to this material. Substance is rapidly absorbed through the skin. May cause dermatitis. Contact with the skin may cause photosensitivity.
Eyes
Causes eye irritation. May cause painful sensitization to light. Causes redness and pain.
Ingestion
May cause irritation of the digestive tract.
EC Risk Phrase
R 52/53
EC Safety Phrase
S 60
UN (DOT)
3077

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.
Exposure Effects
Chronic inhalation may cause effects similar to those of acute inhalation.
Exposure limit(s)
TLV: ppm; 5 mg/m3 (as TWA) (skin) (ACGIH 1996). NIOSH REL: TWA 5 mg/m3 skin
Poison Class
3

Fire Fighting Measures

Flash Point
202
Autoignition
470
Fire Fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. This material in sufficient quantity and reduced particle size is capable of creating a dust explosion. Flammable solid. To extinguish fire use water spray, dry chemical, carbon dioxide, or chemical foam.
Fire Potential
Although phenothiazine oxidizes fairly easily when it is exposed to air, risk of fire is not high.

Accidental Release Measures

Small spills/leaks
Vacuum or sweep up material and place into a suitable disposal container.

Stability and Reactivity

Disposal Code
3
Stability
Stable under normal temperatures and pressures. Substance undergoes color change upon exposure to light and air.
Incompatibilities
Strong oxidizing agents - strong acids.
Decomposition
Nitrogen oxides, carbon monoxide, oxides of sulfur, carbon dioxide.
Combustion Products
if involved in fire, phenothiazine produces highly toxic sulfur and nitrogen oxides, which are dangerous lung irritants.

Transport Information

UN Number
3077
HS Code
2934 30 90
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