NEUTRAL RED (Colour Index No. 50040) (C₁₅H₁₇N₄Cl)

SYNONYMS
Toluylene red.
GENERAL PRECAUTIONS
Avoid skin and eye contact.
Avoid eye contact.
Keep away from heat.
Keep away from oxidising materials.
Wash hands thoroughly after handling.
CHARACTERISTICS
Dark green, combustible powder. Quinone­imine (amino­azin) group of dyes.
HEALTH HAZARD DATA
This is a combustible substance and should never be handled close to heat or a naked flame. It is an eye irritant and has been reported to cause contact dermatitis. Its toxicity has not been quantified but other dyes in this group are known to be highly toxic, eg. methylene blue and thionine; and others are known to be mutagenic or potential carcinogens, eg. toluidine blue and nigrosin.
TREATMENTS
Skin ­ remove contaminated clothing then wash the affected area with soap or mild detergent and large amounts of water until all evidence of the dye has been removed (approximately 15 minutes). If dermatitis develops seek medical advice. Wash contaminated clothing before re­use.
Eyes ­ immediately wash the affected eye with large amounts of water until all evidence of the dye has been removed (approximately 15 minutes). If irritation persists seek immediate medical attention.
Inhalation ­ remove from the area of exposure to fresh air. If breathing has ceased apply artificial respiration. Give oxygen if required. Keep warm and allow to rest. Seek immediate medical attention.
Ingestion ­ wash out the mouth thoroughly with water and seek immediate medical attention.
INCOMPATIBILITY
Heating produces toxic fumes of chlorine and nitrogen compounds. Can react with oxidising materials. This is a combustible substance and should never be handled close to heat or a naked flame.
STORAGE
Store in a cool, dry atmosphere away from heat or oxidising materials.
HANDLING
Use a fume hood to keep the level of exposure to a minimum. Wear protective clothing. A long sleeved laboratory coat or gown, rubber gloves, safety goggles and a face mask as a minimum standard.
DISPOSAL
WEAR:
Butyl rubber gloves, laboratory coat and self contained breathing apparatus.
SPILLS:
On skin and clothing: wash skin with strong soap solution immediately. Rinse thoroughly. Contaminated clothing should be removed, dried and washed with strong soap solution or destroyed. It may be necessary to destroy shoes by burning.
Small spills: absorb liquid on paper towels. Brush solids on to paper. Place in an iron pan and allow evaporation in a fume hood. Add crumpled paper and burn. Wash spill site with a strong soap solution.
Large spills: cover with sand and soda ash mixture (90/10). Mix and shovel into a cardboard box. Pack with a large excess of crumpled paper. Burn in an open pit or incinerator equipped with an afterburner and scrubber.
PACKAGE LOTS: Either
1 Pour or sift on to a thick layer of sand and soda ash mixture (90/10). Mix, and shovel into a heavy paper box with much paper packaging. Burn in an incinerator. The fire may be augmented with scrap wood. Stay on the upwind side.
OR
2 Dissolve in a flammable solvent and spray into the firebox of an incinerator equipped with an afterburner and scrubber.
ENVIRONMENT:

BACK to the top of the Glossary Contents List
BACK to the top of the Chemical Contents List

REFERENCES