ChemicalBook >> CAS DataBase List >>1,8-Dihydroxynaphthylene-3,6-disulfonic acid

1,8-Dihydroxynaphthylene-3,6-disulfonic acid

1,8-Dihydroxynaphthylene-3,6-disulfonic acid structure

CAS No.: 148-25-4

Chemical Name:: 1,8-Dihydroxynaphthylene-3,6-disulfonic acid

Synonyms: CHROMOTROPIC ACID;CHROMOGEN;Aids000369;Aids-000369;Chrmotropicacid;chromotropicaci;Chromotopic acid;Chromotrophic Acid;TIMTEC-BB SBB001312;1,8-Dihydroxynaphthy

CBNumber:: CB7196825

Molecular Formula:: C10H8O8S2

Molecular Weight:: 320.3

MDL Number:: MFCD00003968

MOL File:: 148-25-4.mol

Last updated:2023-11-02 14:28:23

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1,8-Dihydroxynaphthylene-3,6-disulfonic acid Properties

Boiling point	429.2°C (rough estimate)
Density	1.7929 (rough estimate)
refractive index	1.6000 (estimate)
storage temp.	Inert atmosphere,Room Temperature
pka	-0.51±0.40(Predicted)
CAS DataBase Reference	148-25-4(CAS DataBase Reference)
FDA UNII	S596OD720M
EPA Substance Registry System	2,7-Naphthalenedisulfonic acid, 4,5-dihydroxy- (148-25-4)

SAFETY

Risk and Safety Statements

Symbol(GHS)	GHS07
Signal word	Warning
Hazard statements	H335-H315-H319
Precautionary statements	P264-P280-P305+P351+P338-P337+P313P-P264-P280-P302+P352-P321-P332+P313-P362
HS Code	29089990

1,8-Dihydroxynaphthylene-3,6-disulfonic acid price More Price(16)

Manufacturer	Product number	Product description	CAS number	Packaging	Price	Updated	Buy
Sigma-Aldrich	S563692	4,5-DIHYDROXY-2,7-NAPHTHALENEDISULFONIC ACID Aldrich	148-25-4	250mg	$179	2024-03-01	Buy
Biosynth Carbosynth	FD37017	1,8-Dihydroxynaphthylene-3,6-disulfonic acid	148-25-4	10g	$200	2021-12-16	Buy
Matrix Scientific	134872	4,5-Dihydroxynaphthalene-2,7-disulfonicacid 95%+	148-25-4	2.500g	$215	2021-12-16	Buy
Matrix Scientific	134872	4,5-Dihydroxynaphthalene-2,7-disulfonicacid 95%+	148-25-4	5g	$323	2021-12-16	Buy
American Custom Chemicals Corporation	CHM0164809	1,8-DIHYDROXYNAPHTHYLENE-3,6-DISULFONIC ACID 95.00%	148-25-4	0.5G	$1072.5	2021-12-16	Buy

Product number	Packaging	Price	Buy
S563692	250mg	$179	Buy
FD37017	10g	$200	Buy
134872	2.500g	$215	Buy
134872	5g	$323	Buy
CHM0164809	0.5G	$1072.5	Buy

1,8-Dihydroxynaphthylene-3,6-disulfonic acid Chemical Properties,Uses,Production

Chemical Properties

4,5-Dihydroxynaphthalene-2,7-disulfonic acid [148-25-4]. (1,8-dihydroxynaphthalene-3,6-disulfonic acid), chromotropic acid, C10H8O8S2, Mr 320.3: the disodium salt is readily soluble in water. Alkali fusion yields 1,3,8-trihydroxynaphthalene-6-sulfonic acid. Diazo coupling occurs in the 3- and 6-positions.

Uses

Chromotropic acid is used as an analytical reagent and as a coupling component for a wide range of azo dyes, e.g., C.I. Acid Violet 6, C. I. Mordant Blue 13, and C.I. Direct Blue 84.

Definition

ChEBI: A naphthalenesulfonic acid that is naphthalene-2,7-disulfonic acid substituted by hydroxy groups at positions 4 and 5.

Production Methods

2-Hydroxynaphthalene-3,6,8- trisulfonic acid total liquor is concentrated and heated with caustic soda liquor to 158℃ for 20 – 30 h . The melt is diluted with water and poured into excess hydrochloric acid. Salt is added, sulfur dioxide expelled, and the mixture cooled to precipitate the product as the disodium salt in 88 % yield.
An alternative process is based on direct fusion (caustic liquor at 228℃ under pressure) of 1-aminonaphthalene-3,6,8-trisulfonic acid to chromotropic acid without isolating the intermediate oxy Koch acid.

1,8-Dihydroxynaphthylene-3,6-disulfonic acid Preparation Products And Raw materials

Raw materials

gray Naphthalene-2,7-disulfonic acid Koch acid 1-Amino-8-hydroxynaphthalene-3,6-disulphonic acid 3,5-Dibromotoluene

Benzenesulfonic acid

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Preparation Products

Mordant Blue 13 CHROMOTROPE 2R ARSENAZO III ACID VIOLET 7 tetrasodium [mu-[[3,3'-[(3,3'-dihydroxy[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[4,5-dihydroxynaphthalene-2,7-disulphonato]](8-)]]dicuprate(4-)

Mordant Blue 13 3-[(4-Formylphenyl)azo]-4,5-dihydroxy-2,7-naphthalenedisulfonic acid disodium salt DIRECT BLUE 25 ACID RED 60 Direct Black 27

Acid chrome blue K Portofino Blue ES Mordant Blue 6 4,5-Dihydroxy-3-[[4'-[(2-hydroxy-6-sodiosulfo-1-naphthalenyl)azo]-1,1'-biphenyl-4-yl]azo]naphthalene-2,7-disulfonic acid disodium salt C.I. Direct blue 49

Acid Violet 20 CHROMOTROPE 2R

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1,8-Dihydroxynaphthylene-3,6-disulfonic acid Suppliers

Global( 242)Suppliers

Supplier	Tel	Email	Country	ProdList	Advantage
Shanghai Daken Advanced Materials Co.,Ltd	+86-371-66670886	info@dakenam.com	China	15928	58
Henan Tianfu Chemical Co.,Ltd.	+86-0371-55170693 +86-19937530512	info@tianfuchem.com	China	21691	55
career henan chemical co	+86-0371-86658258	sales@coreychem.com	China	29914	58
Hubei Jusheng Technology Co.,Ltd.	18871490254	linda@hubeijusheng.com	CHINA	28180	58
Accela ChemBio Inc.	(+1)-858-699-3322	info@accelachem.com	United States	19965	58
Shandong chuangyingchemical Co., Ltd.	18853181302	sale@chuangyingchem.com	CHINA	5909	58
Chongqing Chemdad Co., Ltd	+86-023-61398051 +8613650506873	sales@chemdad.com	China	39916	58
SIMAGCHEM CORP	+86-13806087780	sale@simagchem.com	China	17367	58
Career Henan Chemica Co	+86-0371-86658258 15093356674;	laboratory@coreychem.com	China	30255	58
Hefei TNJ Chemical Industry Co.,Ltd.	0551-65418671	sales@tnjchem.com	China	34572	58

Supplier	Advantage
Shanghai Daken Advanced Materials Co.,Ltd	58
Henan Tianfu Chemical Co.,Ltd.	55
career henan chemical co	58
Hubei Jusheng Technology Co.,Ltd.	58
Accela ChemBio Inc.	58
Shandong chuangyingchemical Co., Ltd.	58
Chongqing Chemdad Co., Ltd	58
SIMAGCHEM CORP	58
Career Henan Chemica Co	58
Hefei TNJ Chemical Industry Co.,Ltd.	58

View Lastest Price from 1,8-Dihydroxynaphthylene-3,6-disulfonic acid manufacturers

Image	Update time	Product	Price	Min. Order	Purity	Supply Ability	Manufacturer
	2023-01-17	1,8-Dihydroxynaphthylene-3,6-disulfonic acid 148-25-4	US $0.00 / KG	1KG	98%min	30tons/month	WUHAN FORTUNA CHEMICAL CO., LTD
	2019-07-10	1,8-Dihydroxynaphthylene-3,6-disulfonic acid 148-25-4	US $1.00 / KG	1KG	99%	100kg	Career Henan Chemical Co

1,8-Dihydroxynaphthylene-3,6-disulfonic acid
148-25-4
US $0.00 / KG
98%min
WUHAN FORTUNA CHEMICAL CO., LTD

1,8-Dihydroxynaphthylene-3,6-disulfonic acid
148-25-4
US $1.00 / KG
99%
Career Henan Chemical Co

148-25-4(1,8-Dihydroxynaphthylene-3,6-disulfonic acid)Related Search:

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4,5-dihydroxy-7-naphthalenedisulfonicacid 7-Naphthalenedisulfonicacid,4,5-dihydroxy-2 Chrmotropicacid 4,5-Dihydroxy-2,7-naphthalene disulfonic acid 1,8-Dihydroxynaph-thalene-3,6-disulfonic acid 4,5-DIHYDROXY-2,7-NAPHTHALENEDISULFONIC ACID 4,5-dihydroxynaphthalene-2,7-disulphonic acid 1,8-DIHYDROXYNAPHTHALENE-3,6-DISULFONIC ACID 1,8-DIHYDROXYNAPHTHYLENE-3,6-DISULFONIC ACID TIMTEC-BB SBB001312 4,5-dihydroxynaphthalene-2,7-disulfonic acid Chromotopic acid 2,7-Naphthalenedisulfonic acid, 4,5-dihydroxy- 1,8-Dihydroxynaphthy Aids000369 Aids-000369 CHROMOTROPIC ACID(1,8-DIHYDROXYNAPHTHALENE-3,6-DISULFONIC ACID) 8-Dihydroxynaphthylene-3 Chromotropic acid, AR Chromotropic acid, ACS,99% chromotropicaci 4,5-Dihydroxynaphthalene-2,7-disulfonic Acid DISCONTINUED. Please see D494918 CHROMOGEN CHROMOTROPIC ACID Chromotrophic Acid 148-25-4 C10H4SO3H2OH2 C10H4OH2SO3H2 C10H8O8S2 Intermediates of Dyes and Pigments