FD & C red no. 2

  • Acetacid red 2br
  • Acid amaranth
  • Acid amaranth i
  • Acid amaranth n
  • Acid leather red 12bw
  • Acid leather rubine s
Formula
C20H11N2Na3O10S3
Structure
Description
Dark red to dark purple powder. Almost no odor. Tastes salty.
Uses
Industrial applications include dyeing leather, staining wood, coloring paper coatings and coloring photographs. Amaranth finds limited use as a biological stain. It can be used as a reagent for the detection of nitrites and nitrates.

Registry Numbers and Inventories.
CAS
915-67-3
EC (EINECS/ELINCS)
213-022-2
RTECS
QJ6550000
RTECS class
Tumorigen; Drug; Mutagen; Reproductive Effector
Merck
12,391
Beilstein/Gmelin
4122311
Swiss Giftliste 1
G-8338
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C20H11N2O10S3*3Na
Formula mass
604.48
Melting point, °C
218 - 220
Density
1.50 g/cm3 (20 C)
Solubility in water
1 g in 15 ml

Hazards and Protection.
Storage
Store in a cool, dry place. Store in a tightly closed container.
Handling
Avoid contact with skin and eyes. Avoid ingestion and inhalation. Use only in a chemical fume hood.
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.
Small spills/leaks
Vacuum or sweep up material and place into a suitable disposal container.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Strong oxidizing agents.
Decomposition
Nitrogen oxides, carbon monoxide, oxides of sulfur, carbon dioxide.

Fire.
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Extinguishing media: Use water spray, dry chemical, or foam. Do NOT use carbon dioxide.
Fire potential
This material is probably combustible.

Health.
Poison_Class
5
Exposure effects
   Ingestion
Ingestion of large amounts may cause gastrointestinal irritation. Expected to be a low ingestion hazard.
   Inhalation
May cause respiratory tract irritation. Low hazard for usual industrial handling.
   Skin
Non-irritating to the skin.
   Eyes
Non-irritating to the eyes.

First aid
 
   Ingestion
Wash mouth out with water. Get medical aid if irritation or symptoms occur.
   Inhalation
Remove from exposure to fresh air immediately. Get medical aid if cough or other symptoms appear.
   Skin
Get medical aid if irritation develops or persists. Flush skin with plenty of soap and water.
   Eyes
Get medical aid. Gently lift eyelids and flush continuously with water.

Transport.