Saffron Yellow

  • C.I. 10315
  • Maritus Yellow
  • 2,4-Dinitro-1-naphthol
Formula
C10H6N2O5
Structure
Description
Light brown powder.
Uses
Fabric dye.

Registry Numbers and Inventories.
CAS
605-69-6
EC (EINECS/ELINCS)
210-093-1
R 36/37/38
RTECS
QL3850000
RTECS class
Mutagen; Human Data
UN (DOT)
3143
Beilstein/Gmelin
2057462
Beilstein Reference
4-06-00-04240
Swiss Giftliste 1
G-1574
Canada DSL/NDSL
NDSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed

Properties.
Formula
C10H6N2O5
Formula mass
234.16
Melting point, °C
130-133
Boiling point, °C
408
Vapor pressure, mmHg
3E-7 (25 C)
Solubility in water
Soluble
pKa/pKb
2.12 (pKa)
Partition coefficient, pKow
2.97
Heat of vaporization
68.6 kJ/mol
Heat of combustion
-4631 kJ/mol

Hazards and Protection.
Storage
Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
Handling
Wash thoroughly after handling. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation.
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
A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator's use.
Small spills/leaks
Sweep up, then place into a suitable container for disposal. Avoid generating dusty conditions. Provide ventilation.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Oxidizing agents.
Decomposition
Nitrogen oxides, carbon monoxide, irritating and toxic fumes and gases, carbon dioxide, nitrogen.

Fire.
Flash Point,°C
180
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. To extinguish fire use water spray, dry chemical, carbon dioxide, or appropriate foam.
Fire potential
Non-Combustible
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.
Health
1
 
Flammability
0
 
 
Reactivity
0
 

Health.
Poison_Class
2
Exposure effects
   Ingestion
May cause irritation of the digestive tract. The toxicological properties of this substance have not been fully investigated.
   Inhalation
May cause respiratory tract irritation. The toxicological properties of this substance have not been fully investigated.
   Skin
May cause skin irritation. Contact with skin causes pupils to dilate. Absorption through the skin causes nausea, vomiting and insomnia.
   Eyes
May cause eye irritation.

First aid
 
   Ingestion
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.
   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. Wash clothing before reuse.
   Eyes
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.

Transport.
UN number
3143
Response guide
Hazard class
6.1
Packing Group
I; II; III