- [4-[4,4'-bis(Dimethylamino)benzhydrylidene]cyclohexa-2,5-dien-1-ylidene]dimethylammonium chloride
- Aniline violet
- Aniline violet pyoktanine
Dark green powder or greenish, glistening pieces with metallic luster.
acid base indicator, denaturant for alc, biological stain, dye for textiles, pigments.
Registry Numbers and Inventories.
EC Index Number
harmful, carcinogenic, irritant, dangerous for the environment
R 20/22 40 41 50/53
S 26 36/37/39 61
Tumorigen; Mutagen; Reproductive Effector; Primary Irritant
Swiss Giftliste 1
Japan ENCS (MITI)
Melting point, °C
189 - 194
Decomposition point, °C
Vapor density (air=1)
1.19 g/cm3 (20 C)
Solubility in water
Hazards and Protection.
Keep away from heat, sparks, and flame. Store in a cool, dry place. Keep containers tightly closed. Store protected from light.
Wash hands before eating. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid breathing dust, vapor, mist, or gas. Avoid contact with skin and eyes. Keep container tightly closed. Store protected from light. Wash clothing before reuse.
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.
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.
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.
Stable under normal temperatures and pressures.
Strong oxidizing agents - strong acids.
Hydrogen chloride, nitrogen oxides, carbon monoxide, carbon dioxide.
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. This material in sufficient quantity and reduced particle size is capable of creating a dust explosion. Containers may explode if exposed to fire. Extinguishing media: Use water spray to cool fire-exposed containers. In case of fire use water spray, dry chemical, carbon dioxide, or chemical foam.
Prolonged or repeated exposure may cause nausea, dizziness, and headache.
Harmful if swallowed. May cause gastrointestinal irritation with nausea, vomiting and diarrhea.
May cause respiratory tract irritation. The toxicological properties of this substance have not been fully investigated.
May cause skin irritation. Dust may cause mechanical irritation.
Dust may cause mechanical irritation. Eye damage may be delayed. May cause eye irritation and possible damage.
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.
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
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.
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.
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