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Sodium 6-hydroxynaphthalene-2-sulfonate

Sodium 6-hydroxynaphthalene-2-sulfonate structure

CAS No.: 135-76-2

Chemical Name:: Sodium 6-hydroxynaphthalene-2-sulfonate

Synonyms: 6-HYDROXY-2-NAPHTHALENESULFONIC ACID SODIUM SALT;SCHAEFFER ACID;SCHAFFER'S SALT;SCHAEFFER'S ACID;SCHAEFFER'S SALT;Chevrolet Sodium;Sodium 6-hydroxynaph;Ponceau 4R Impurity 4;SCHAEFFERS SALT (SODIUM);SCHAEFFER'SACID(SODIUMSALT)

CBNumber:: CB7754287

Molecular Formula:: C10H7NaO4S

Molecular Weight:: 246.21

MDL Number:: MFCD00070488

MOL File:: 135-76-2.mol

MSDS File:: SDS

TDS File:: TDS

Last updated:2026-05-28 03:26:36

Product description	Number	Pack Size	Price
6-Hydroxy-2-naphthalenesulfonic acid sodium salt hydrate technical grade	400424	50G	$84.8
Sodium 2-Naphthol-6-sulfonate Hydrate >97.0%(HPLC)(T)	N0035	25g	$34
Sodium 2-Naphthol-6-sulfonate Hydrate >97.0%(HPLC)(T)	N0035	500g	$213
6-Hydroxy-2-naphthalenesulfonic Acid Sodium Salt >95%(HPLC)	TRC-H950735-5G	5g	$209
6-Hydroxy-2-naphthalenesulfonic Acid Sodium Salt >95%(HPLC)	TRC-H950735-25MG	25mg	$31
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Sodium 6-hydroxynaphthalene-2-sulfonate Properties

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
InChI	1S/C10H8O4S.Na.H2O/c11-9-3-1-8-6-10(15(12,13)14)4-2-7(8)5-9;;/h1-6,11H,(H,12,13,14);;1H2/q;+1;/p-1
InChIKey	QHVRFNCHOMKXQP-UHFFFAOYSA-M
SMILES	O.[Na+].Oc1ccc2cc(ccc2c1)S([O-])(=O)=O
LogP	-2.26 at 25℃
CAS DataBase Reference	135-76-2(CAS DataBase Reference)
FDA UNII	X05MYI02LR
EPA Substance Registry System	2-Naphthalenesulfonic acid, 6-hydroxy-, monosodium salt (135-76-2)
UNSPSC Code	12352100
NACRES	NA.22

SAFETY

Risk and Safety Statements

Symbol(GHS)

GHS07

Signal word

Warning

Hazard statements

H315-H319-H335

Precautionary statements

P261-P264-P271-P280-P302+P352-P305+P351+P338

target organs

Respiratory system

PPE

dust mask type N95 (US), Eyeshields, Gloves

Hazard Codes

Xi,Xn

Risk Statements

36/37/38-20/21/22

Safety Statements

26-36-36/37/39-22

WGK Germany

TSCA

TSCA listed

HS Code

2922210060

Storage Class

11 - Combustible Solids

Hazard Classifications

Eye Irrit. 2
Skin Irrit. 2
STOT SE 3

REACH Registrations

Active

NFPA 704

	1
2		0

Sodium 6-hydroxynaphthalene-2-sulfonate price More Price(41)

Manufacturer	Product number	Product description	CAS number	Packaging	Price	Updated	Buy
Sigma-Aldrich	400424	6-Hydroxy-2-naphthalenesulfonic acid sodium salt hydrate technical grade	135-76-2	50G	$84.8	2024-03-01	Buy
TCI Chemical	N0035	Sodium 2-Naphthol-6-sulfonate Hydrate >97.0%(HPLC)(T)	135-76-2	25g	$34	2026-04-30	Buy
TCI Chemical	N0035	Sodium 2-Naphthol-6-sulfonate Hydrate >97.0%(HPLC)(T)	135-76-2	500g	$213	2026-04-30	Buy
TRC	TRC-H950735-5G	6-Hydroxy-2-naphthalenesulfonic Acid Sodium Salt >95%(HPLC)	135-76-2	5g	$209	2026-06-03	Buy
TRC	TRC-H950735-25MG	6-Hydroxy-2-naphthalenesulfonic Acid Sodium Salt >95%(HPLC)	135-76-2	25mg	$31	2026-06-03	Buy

Product number	Packaging	Price	Buy
400424	50G	$84.8	Buy
N0035	25g	$34	Buy
N0035	500g	$213	Buy
TRC-H950735-5G	5g	$209	Buy
TRC-H950735-25MG	25mg	$31	Buy

Sodium 6-hydroxynaphthalene-2-sulfonate Chemical Properties,Uses,Production

Uses

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

Uses

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.

General Description

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

Sodium 6-hydroxynaphthalene-2-sulfonate Preparation Products And Raw materials

Raw materials

2-Naphthol

Preparation Products

Sunset Yellow FCF ALLURA RED AC

Sodium 6-hydroxynaphthalene-2-sulfonate Suppliers

Global( 326)Suppliers

Supplier	Tel	Email	Country	ProdList	Advantage
Hebei Chuanghai Biotechnology Co., Ltd	+8615350571055	Sibel@chuanghaibio.com	China	8738	58
Hebei Chuanghai Biotechnology Co,.LTD	+86-86-13131129325 +8613131129325	sales1@chuanghaibio.com	China	5220	58
Henan Fengda Chemical Co., Ltd	+86-371-86557731 +86-13613820652	info@fdachem.com	China	20120	58
HEBEI SHENGSUAN CHEMICAL INDUSTRY CO.,LTD	+86-15350851019; +8615350851019	admin@86-ss.com	China	999	58
Henan Tianfu Chemical Co.,Ltd.	+86-0371-55170693 +86-19937530512	info@tianfuchem.com	China	21585	55
SHANDONG ZHI SHANG CHEMICAL CO.LTD	0531-68652808 18953170293	sales@sdzschem.com	China	2921	58
Shenzhen Nexconn Pharmatechs Ltd	+86-755-89396905 +86-15013857715	admin@nexconn.com	China	10403	58
Standardpharm Co. Ltd.	86-714-3992388	overseasales1@yongstandards.com	United States	14332	58
Alchem Pharmtech,Inc.	8485655694	sales@alchempharmtech.com	United States	63687	58
CONIER CHEM AND PHARMA LIMITED	+8618523575427	sales@conier.com	China	49979	58

Supplier	Advantage
Hebei Chuanghai Biotechnology Co., Ltd	58
Hebei Chuanghai Biotechnology Co,.LTD	58
Henan Fengda Chemical Co., Ltd	58
HEBEI SHENGSUAN CHEMICAL INDUSTRY CO.,LTD	58
Henan Tianfu Chemical Co.,Ltd.	55
SHANDONG ZHI SHANG CHEMICAL CO.LTD	58
Shenzhen Nexconn Pharmatechs Ltd	58
Standardpharm Co. Ltd.	58
Alchem Pharmtech,Inc.	58
CONIER CHEM AND PHARMA LIMITED	58

View Lastest Price from Sodium 6-hydroxynaphthalene-2-sulfonate manufacturers

Update time	Product	Price	Min. Order	Purity	Supply Ability	Manufacturer
2026-07-24	Sodium 6-hydroxynaphthalene-2-sulfonate 135-76-2	$800.00-990.00	1ton	99%	5000Ton	HEBEI SHENGSUAN CHEMICAL INDUSTRY CO.,LTD
2026-07-09	Chevrolet Sodium 135-76-2	$10.00	1KG	99%		Henan Fengda Chemical Co., Ltd
2026-05-28	Sodium 6-hydroxynaphthalene-2-sulfonate 135-76-2	$10.50	1KG	99%	10 ton	Hebei Chuanghai Biotechnology Co,.LTD

Sodium 6-hydroxynaphthalene-2-sulfonate
135-76-2
$800.00-990.00
99%
HEBEI SHENGSUAN CHEMICAL INDUSTRY CO.,LTD

Chevrolet Sodium
135-76-2
$10.00
99%
Henan Fengda Chemical Co., Ltd

Sodium 6-hydroxynaphthalene-2-sulfonate
135-76-2
$10.50
99%
Hebei Chuanghai Biotechnology Co,.LTD

Sodium 6-hydroxynaphthalene-2-sulfonate Spectrum

Sodium 6-hydroxynaphthalene-2-sulfonate(135-76-2)IR1 Sodium 6-hydroxynaphthalene-2-sulfonate(135-76-2)IR2

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SCHAEFFERS SALT (SODIUM) 6-HYDROXY-2-NAPHTHALENESULFONIC ACID, SODIUM SALT Hydrat, Tech. 6-hydroxy-2-naphthalenesulfonic acid monosodium salt 6-Hydroxy-2-naphthalenesulfonic acid hydrate sodium salt SODIUM 2-NAPHTHOL-6-SULFONATE SCHAEFFER ACID SCHAEFFER'S SALT SCHAEFFER'S ACID SCHAFFER'S SALT SODIUM 6-HYDROXY-2-NAPHTHALENESULFONATE SODIUM 6-HYDROXYNAPHTHALENE-2-SULFONATE Sodium 2-Naphthol-6-sulfonate Hydrate 2-NAPHTHOL-6-SULFONIC ACID SODIUM SALT DIHYDRATE 2-NAPHTHOL-6-SULFONIC ACID SODIUM SALT 2-NAPHTHOL-6-SULFONIC ACID SODIUM 6-Hydroxy-2-naphthalenesulfonic acid sodium salt hydrate Sodium 6-naphthol-2-sulfonate Schaeffer's acid sodium salt Ponceau 4R Impurity 4 sodium 6-hydroxy-2-naphthalenesulfonate hydrate 2 NAPTHOL 6 SULPHONIC ACID (SODIUM SALT) 2-?Naphthalenesulfonic acid, 6-?hydroxy-?, sodium salt (1:1) Chevrolet Sodium 6-Hydroxynaphthalene-2-sulfonic acid sodium salt Sodium 6-hydroxynaph 6-Hydroxy-2-naphthalenesulfonic Acid Sodium Salt Schaeffer's Acid Sodium Salt Sodium 6-Hydroxy-2-naphthalenesulfonate 2-Naphthol-6-sulfonic Acid Sodium Salt 6-Hydroxy-2-naphtalene sulfonic acid sodium salt 6-Hydroxynaphthalene-2-sulphonic acid, sodium salt 6-Hydroxy-2-naphthalenedisulfonicacid,monosodiumsalt 6-hydroxy-2-naphthalenesulfonicacimonosodiumsalt 2-naphthol-6-sulfonic acid sodium hydrate Sodium2-Naphthol-6-sulfonateHydrate> Sodium 6-Hydroxy-2-naphthalenesulfonate Standard 6-Hydroxy-2-naphthalenesulfonate Sodium Sodium 6-hydroxynaphthalene-2-sulfonat 2-Naphthol-6-sulfonic acid sodium/Schaeffler's sodium salt SCHAEFFER'SACID(SODIUMSALT) Sodium 2-phthol-6-sulfote Hydrate Sodium 6-hydroxynaphthalene 6-HYDROXY-2-NAPHTHALENESULFONIC ACID SODIUM SALT 135-76-2 C10H7O4SNa HOC10H6SO3NaxH2O C10H7NaO4SxH2O C10H8O4SNa C10H7O4SNaH2O Organic Building Blocks Building Blocks Sulfonic/Sulfinic Acids Sulfur Compounds Intermediates Organic Building Blocks Sulfonic/Sulfinic Acids Sulfur Compounds