Guinea green

  • Acid green b
  • C.I. 42085
Formula
C37H35N2NaO6S2
Structure
Description
A dull dark green powder.
Uses
Guinea green b is used to dye wool, silk and leather. It is also used to dye paper, in wood stains, as a biological stain and as an indicator. Its barium and aluminum salts are used as pigments. In the past, this color was used as a food, drug and cosmetic dye to color gelatine desserts, frozen desserts, sweets and confections which did not contain fats and oils, bakery products and cereals, and drug capsules. However, its use as color additive for foods, drugs and cosmetics was forbidden in the usa in late 1966, and its use as a food additive was forbidden in japan in 1967. It is considered to be unsafe for use in food throughout the world. In western europe, guinea green b can provisionally be used in cosmetics that do not come into contact with mucous membranes, and in japan, it is used in externally applied cosmetics.

Registry Numbers and Inventories.
CAS
4680-78-8
EC (EINECS/ELINCS)
225-132-8
RTECS
BQ4375000
RTECS class
Tumorigen; Mutagen
Merck
12,4603
Beilstein/Gmelin
5716108
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C37H35N2O6S2*Na
Formula mass
690.82
Decomposition point, °C
255
Solubility in water
soluble slightly

Hazards and Protection.
Storage
Keep in a cool, dry, dark location in a tightly sealed container or cylinder. Keep away from incompatible materials, ignition sources and untrained individuals. Secure and label area. Protect containers/cylinders from physical damage.
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.
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
Use NIOSH/MSHA approved respirator appropriate for exposure of concern.
Small spills/leaks
Evacuate area and ventilate. Wear protective equipment. If required, use an inert absrobent. Sweep up and place in an appropriate container for disposal. Wash contaminated surfaces.
Stability
No data.
Incompatibilities
Strong oxidizing agents.

Fire.
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.
Combustion products
When heated to decompose it emits very toxic fumes of sulfur oxides and nitrogen oxides.

Health.
Exposure effects
The toxicological properties of this material have not been investigated.

First aid
 
   Ingestion
The possible benefit of early removal of some ingested material by cautious gastric lavage must be weighed against potential complications of bleeding or perforation. Activated charcoal activated charcoal binds most toxic agents and can decrease their systemic absorption if administered soon after ingestion. Activated charcoal: administer charcoal as a slurry (240 ml water/30 g charcoal). Usual dose: 25 to 100 g in adults/adolescents.
   Inhalation
Move patient to fresh air. Monitor for respiratory distress. If cough or difficulty breathing develops, evaluate for respiratory tract irritation, bronchitis, or pneumonitis. Administer oxygen and assist ventilation as required. Treat bronchospasm with beta2 agonist and corticosteroid aerosols.
   Skin
Remove contaminated clothing. Wash exposed area with soap and water. If symptoms persist, seek medical attention. Launder clothing before reuse.
   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.

Transport.