Naphthalene-2,6-disulfonic acid

CAS No.: 581-75-9

Chemical Name:: Naphthalene-2,6-disulfonic acid

Synonyms: Naphthalene-2,6-disulfonic;Naphthalene-2,6-disulfonic acid;2,6-NAPHTHALENE DISULFONIC ACID;naphthalene-2,6-disulphonic acid;Naphthalene-2,6-bissulfonic acid;Naphthalene-2,6-disulfonic acid(581-75-9)

CBNumber:: CB9731224

Molecular Formula:: C10H8O6S2

Molecular Weight:: 288.3

MOL File:: 581-75-9.mol

MSDS File:: SDS

Modify Date:: 2023/10/30 16:44:12

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Naphthalene-2,6-disulfonic acid Properties

Density	1.704±0.06 g/cm3(Predicted)
storage temp.	2-8°C
pka	-0.41±0.40(Predicted)
CAS DataBase Reference	581-75-9(CAS DataBase Reference)
EPA Substance Registry System	2,6-Naphthalenedisulfonic acid (581-75-9)

SAFETY

Risk and Safety Statements

Symbol(GHS)	GHS05
Signal word	Danger
Hazard statements	H314
Precautionary statements	P310-P260-P280
RIDADR	1759
HazardClass	8
PackingGroup	III
HS Code	2904100090

Naphthalene-2,6-disulfonic acid Chemical Properties,Uses,Production

Production Methods

Naphthalene is added to sulfuric acid – monohydrate (SO3 H2O) mixture at 135 ℃, and the reaction is completed by heating at 170 – 175 ℃ for 5 h. After quenching in water, the disodium salt of Naphthalene-2,6-disulfonic acid is precipitated at 90 C by adding sodium chloride and sodium sulfate. Filtration at 95℃ followed by washing with sodium sulfate solution gives the required product, free from the 2,7-isomer, in 21 % yield. The 2,7-isomer is then isolated from the filtrates.

Naphthalene-2,6-disulfonic acid Preparation Products And Raw materials

Raw materials

Naphthalene-2,6-disulfonic acid MELIBIOSE Naphthalene Sodium chloride Sodium sulfate

Preparation Products

2,6-NAPHTHALENEDISULFONYL CHLORIDE

Naphthalene-2,6-disulfonic acid Suppliers

Global( 58)Suppliers

Supplier	Tel	Country	ProdList	Advantage	Inquiry
Anax Laboratories	+91 (40) 6464-2010	New Delhi, India	177	0	Inquiry
CHEMSWORTH	+91-261-2397244	New Delhi, India	6707	30	Inquiry
Shanghai Bojing Chemical Co.,Ltd.	+86-86-02137122233 +8613795318958	China	299	55	Inquiry
Henan Tianfu Chemical Co.,Ltd.	+86-0371-55170693 +86-19937530512	China	21667	55	Inquiry
career henan chemical co	+86-0371-86658258 +8613203830695	China	29825	58	Inquiry
Shaanxi Dideu Medichem Co. Ltd	+86-29-87569266 15319487004	China	4088	58	Inquiry
Hefei TNJ Chemical Industry Co.,Ltd.	+86-0551-65418671 +8618949823763	China	34571	58	Inquiry
Dayang Chem (Hangzhou) Co.,Ltd.	571-88938639 +8617705817739	China	52861	58	Inquiry
Hebei Guanlang Biotechnology Co., Ltd.	+8619930503259	China	18424	58	Inquiry
GIHI CHEMICALS CO.,LIMITED	+8618058761490	China	50000	58	Inquiry

Supplier	Advantage
Anax Laboratories	0
CHEMSWORTH	30
Shanghai Bojing Chemical Co.,Ltd.	55
Henan Tianfu Chemical Co.,Ltd.	55
career henan chemical co	58
Shaanxi Dideu Medichem Co. Ltd	58
Hefei TNJ Chemical Industry Co.,Ltd.	58
Dayang Chem (Hangzhou) Co.,Ltd.	58
Hebei Guanlang Biotechnology Co., Ltd.	58
GIHI CHEMICALS CO.,LIMITED	58

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Naphthalene-2,6-bissulfonic acid 2,6-NAPHTHALENE DISULFONIC ACID Naphthalene-2,6-disulfonic acid naphthalene-2,6-disulphonic acid Naphthalene-2,6-disulfonic Naphthalene-2,6-disulfonic acid(581-75-9) 581-75-9 C10H8O6S2 Intermediates of Dyes and Pigments