Sodium 6-hydroxynaphthalene-2-sulfonate

What is Sodium 6-hydroxynaphthalene-2-sulfonate?

6-Hydroxy-2-naphthalenesulfonic Acid Sodium Salt is a coupling component used to prepare heterocyclic monoazo dyes.

6-Hydroxy-2-naphthalenesulfonic acid sodium salt hydrate may be used in the following studies:

As precursors during the agar-plate screening test.
Preparation of methoxy-substituted naphthalenesulfonyl chloride.
Synthesis of FD&C Red No. 40, a synthetic water-soluble color that is permitted for coloring foods, drugs and cosmetics in the U.S.A.

Sodium salt of 6-hydroxy-2-naphthalenesulfonic acid is also referred as Schaeffer′s salt.

Melting point:	>300 °C(lit.)
Boiling point:	627.11℃[at 101 325 Pa]
vapor pressure	0Pa at 25℃
storage temp.	Keep in dark place,Inert atmosphere,Room temperature
solubility	DMSO (Slightly), Methanol (Slightly)
form	Solid
color	Off-White
Water Solubility	1000g/L at 25℃
Stability:	Hygroscopic
CAS DataBase Reference	135-76-2(CAS DataBase Reference)
EPA Substance Registry System	2-Naphthalenesulfonic acid, 6-hydroxy-, monosodium salt (135-76-2)

Signal word	Warning
Pictogram(s)	Exclamation Mark Irritant GHS07
GHS Hazard Statements	H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation
Precautionary Statement Codes	P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P271:Use only outdoors or in a well-ventilated area. P280:Wear protective gloves/protective clothing/eye protection/face protection. P302+P352:IF ON SKIN: wash with plenty of soap and water. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.