4-Amino-5-hydroxy-1-naphthalenesulfonic acid

Name	8-Amino-1-naphthol-5-sulfonic acid
Synonyms	S acid 1-AMINO-8-NAPTHOL-4-SULFONIC ACID 1-AMINO-8-NAPHTHOL-4-SULFONIC ACID 8-Amino-1-naphthol-5-sulfonic acid 4-amino-5-hydroxynaphthalene-1-sulfonate 4-amino-5-hydroxy-1-naphthalenesulfonicaci 4-Amino-5-hydroxynaphthalene-1-sulfonicacid 4-amino-5-hydroxynaphthalene-1-sulfonic acid 4-Amino-5-Hydroxynaphthalene-1-Shlfonic Acid 4-Amino-5-hydroxy-1-naphthalenesulfonic acid 8-AMINO-1-NAPHTHOL-5-SULFONIC ACIDPRACTI CAL GRADE
CAS	83-64-7
EINECS	201-491-6
InChI	InChI=1/C10H9NO4S/c11-7-4-5-9(16(13,14)15)6-2-1-3-8(12)10(6)7/h1-5,12H,11H2,(H,13,14,15)/p-1

Molecular Formula	C10H9NO4S
Molar Mass	239.25
Density	1.4338 (rough estimate)
Solubility	DMSO (Slightly), Methanol (Slightly)
Appearance	Solid
Color	Dark Brown
Storage Condition	-20°C Freezer, Under inert atmosphere
Refractive Index	1.6500 (estimate)
MDL	MFCD00003992
Physical and Chemical Properties	White needle-like crystals. Slightly soluble in water. It turned bright green in case of ferric chloride solution.
Use	Important intermediates for the manufacture of acid dyes, Leather dyes, also used for the synthesis of Chicago SS acid

Hazard Symbols	C - Corrosive
Risk Codes	34 - Causes burns
Safety Description	S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S27 - Take off immediately all contaminated clothing. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.)
UN IDs	UN 2583 8/PG 2
WGK Germany	2
RTECS	QK1295000

Chemical properties	White needle crystals. Slightly soluble in water, soluble in alkali solution, insoluble in alcohol and ether. The ferric chloride solution is bright green.
use	as a dye intermediate. It is used as an important intermediate in the manufacture of acid dyes and leather dyes, and also used in the synthesis of Chicago SS acid, etc. It is also used as an important intermediate in the manufacture of acid dyes and leather dyes, and also used in the synthesis of Chicago SS acid, etc.
Production method	It is obtained by alkali melting and acidification of 1-naphthylamine -4, 8-disulfonic acid at 200-230 ℃.
category	toxic substances
toxicity classification	low toxicity
acute toxicity	oral-rat LD50: 6210 mg/kg
stimulation data	eyes-rabbit 500 mg/24 hours mild
flammability hazard characteristics	combustible; combustion produces toxic nitrogen oxides and sulfur oxide smoke
storage and transportation characteristics	warehouse ventilation and low temperature drying
fire extinguishing agent	dry powder, foam, sand, carbon dioxide, mist water
EPA chemical information	Information provided by: ofmpub.epa.gov (external link)