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1,5-Naphthalenedisulfonic acid

1,5-Naphthalenedisulfonic acid structure

CAS No.: 81-04-9

Chemical Name:: 1,5-Naphthalenedisulfonic acid

Synonyms: ARMSTRONG ACID;Naphthalene-1,5-disulfonic acid tetrahydrate;29685;NSC 9588;1,5-NaphthaL;1,5-disulfonic acid;Cabalt trioxide, AR;1,5-Naphthalenedisul;Hexetidine EP Impurity D;Naphthalin-1,5-disulfonsure

CBNumber:: CB8346027

Molecular Formula:: C10H8O6S2

Molecular Weight:: 288.3

MDL Number:: MFCD00064178

MOL File:: 81-04-9.mol

MSDS File:: SDS

Last updated:2024-10-25 16:21:11

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1,5-Naphthalenedisulfonic acid Properties

Melting point	242.5°C (rough estimate)
Boiling point	400.53°C (rough estimate)
Density	1.7040
vapor pressure	0Pa at 25℃
refractive index	1.5630 (estimate)
storage temp.	Store below +30°C.
pka	-0.60±0.40(Predicted)
color	Crystals or plates
Water Solubility	90.52g/L at 25℃
LogP	-0.94
CAS DataBase Reference	81-04-9(CAS DataBase Reference)
EWG's Food Scores	1
FDA UNII	E8FPK78470
EPA Substance Registry System	1,5-Naphthalenedisulfonic acid (81-04-9)

SAFETY

Risk and Safety Statements

Symbol(GHS)	GHS05
Signal word	Danger
Hazard statements	H314-H318
Precautionary statements	P260-P280-P301+P330+P331-P303+P361+P353-P304+P340-P305+P351+P338-P310
Hazard Codes	C
Risk Statements	34
Safety Statements	22-24/25-45-36/37/39-26
RIDADR	UN 2585
WGK Germany	1
HazardClass	8
PackingGroup	III
HS Code	2904100090
Toxicity	LD50 orl-rat: 30 g/kg GISAAA 45(3),73,80

1,5-Naphthalenedisulfonic acid price More Price(13)

Manufacturer	Product number	Product description	CAS number	Packaging	Price	Updated	Buy
Sigma-Aldrich	8.40104	1,5-Naphthalenedisulfonic acid for synthesis	81-04-9	25g	$44.2	2024-03-01	Buy
Sigma-Aldrich	8.40104	1,5-Naphthalenedisulfonic acid for synthesis	81-04-9	250G	$121	2024-03-01	Buy
TRC	N378483	1,5-NaphthalenedisulfonicAcid	81-04-9	1g	$45	2021-12-16	Buy
Matrix Scientific	097414	Naphthalene-1,5-disulfonic acid 95+%	81-04-9	25g	$98	2021-12-16	Buy
American Custom Chemicals Corporation	CHM0006239	1,5-NAPHTHALENEDISULFONIC ACID 95.00%	81-04-9	25G	$1227.91	2021-12-16	Buy

Product number	Packaging	Price	Buy
8.40104	25g	$44.2	Buy
8.40104	250G	$121	Buy
N378483	1g	$45	Buy
097414	25g	$98	Buy
CHM0006239	25G	$1227.91	Buy

1,5-Naphthalenedisulfonic acid Chemical Properties,Uses,Production

Chemical Properties

Naphthalene-1,5-disulfonic acid [81-04-9]. Armstrong acid, C10H8O6S2, Mr 288.28, crystallizes as the tetrahydrate but dehydrates at 125 ℃ to give the anhydrous acid (mp 240 – 245℃). The disulfonic acid forms an anhydride when treated with oleum below 50℃. This anhydride reacts with ammonia to give a mixture of naphthalene-1,5-disulfonamide and naphthalene-1- sulfonamide-5-sulfonic acid. Treatment of the disodium salt of naphthalene-1,5-disulfonic acid with phosphorus pentachloride at 110℃ gives naphthalene-1,5-disulfonyl chloride (mp 184 ℃), which may also be prepared by chlorosulfonation of naphthalene. Reaction of an aqueous solution of naphthalene-1,5-disulfonic acid with bromide – bromate gives 1,5-dibromonaphthalene so readily that the yellow precipitate may be used to identify very low concentrations of the disulfonic acid.

Uses

The disodium salt of naphthalene-1,5- disulfonic acid gives 1-hydroxynaphthalene-5- sulfonic acid or 1,5-dihydroxynaphthalene (see Section 3.3) by fusion processes. Further sulfonation of the disulfonated reaction mixture gives naphthalene-1,3,5-trisulfonic acid, and nitration leads to 1- and 2-nitronaphthalene-4,8-disulfonic acids as intermediates to the corresponding aminonaphthalene disulfonic acids. Naphthalene-1,5-disulfonic acid is an important stabilizer for diazo compounds.

Definition

ChEBI: Naphthalene-1,5-disulfonic acid is a naphthalenesulfonic acid.

Production Methods

Naphthalene is mixed with 20 % oleum at 20 – 35 C followed by gradual addition of 65 % oleum and further naphthalene alternately. After heating for 6 h at 55 C the reaction mixture is added to water, and the product is precipitated as the free acid by cooling or as the disodium salt by the addition of alkaline sodium sulfate. In each case, the isolated yield is ca. 53 %. The 1,6-disulfonic acid can be recovered from the filtrate. Higher yields of 4 have been reported for alternative processes; for example, solvent sulfonation with sulfur trioxide and chlorosulfonic acid in a solvent such as tetrachloroethylene [24] or sulfonation with oleum through a double screw-feed apparatus.

Flammability and Explosibility

Not classified

Safety Profile

Very low oral toxicity. Whenheated to decomposition it emits toxic fumes of SOx. Seealso SULFONATES.

1,5-Naphthalenedisulfonic acid synthesis

Synthesis of 1,5-Naphthalenedisulfonic acid from Naphthalene

1,5-Naphthalenedisulfonic acid Preparation Products And Raw materials

Raw materials

Naphthalene Sulfuric acid 4-aminonaphthalene-1,5-disulphonic acid Chlorosulfonic acid

Preparation Products

trisodium 2-[[6-[(4,6-dichloro-1,3,5-triazin-2-yl)methylamino]-1-hydroxy-3-sulphonato-2-naphthyl]azo]naphthalene-1,5-disulphonate Reactive Red M-3BE 1,5-Dihydroxy naphthalene trisodium 2-[[6-[(4-amino-6-chloro-1,3,5-triazin-2-yl)methylamino]-1-hydroxy-3-sulphonato-2-naphthyl]azo]naphthalene-1,5-disulphonate Direct Blue 71

NAPHTHALENE-1,7-DISULFONIC ACID 1,6-Naphthalenedisulfonic acid Naphthalene-2-sulfonic acid Disodium 1,5-naphthalenedisulfonate

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1,5-Naphthalenedisulfonic acid Suppliers

Global( 324)Suppliers

Supplier	Tel	Email	Country	ProdList	Advantage
Hebei Mojin Biotechnology Co., Ltd	+86 13288715578 +8613288715578	sales@hbmojin.com	China	12837	58
Hebei Yanxi Chemical Co., Ltd.	+8617531190177	peter@yan-xi.com	China	5857	58
Hebei Chuanghai Biotechnology Co,.LTD	+86-13131129325	sales1@chuanghaibio.com	China	5889	58
Hebei Weibang Biotechnology Co., Ltd	+8617732866630	bess@weibangbio.com	China	18152	58
Henan Fengda Chemical Co., Ltd	+86-371-86557731 +86-13613820652	info@fdachem.com	China	20285	58
hebei hongtan Biotechnology Co., Ltd	+86-86-1913198-3935 +8617331935328	sales03@chemcn.cn	China	970	58
Shanghai Daken Advanced Materials Co.,Ltd	+86-371-66670886	info@dakenam.com	China	18751	58
career henan chemical co	+86-0371-86658258 +8613203830695	sales@coreychem.com	China	29880	58
Hubei xin bonus chemical co. LTD	86-13657291602	linda@hubeijusheng.com	CHINA	22963	58
Chongqing Chemdad Co., Ltd	+86-023-6139-8061 +86-86-13650506873	sales@chemdad.com	China	39894	58

Supplier	Advantage
Hebei Mojin Biotechnology Co., Ltd	58
Hebei Yanxi Chemical Co., Ltd.	58
Hebei Chuanghai Biotechnology Co,.LTD	58
Hebei Weibang Biotechnology Co., Ltd	58
Henan Fengda Chemical Co., Ltd	58
hebei hongtan Biotechnology Co., Ltd	58
Shanghai Daken Advanced Materials Co.,Ltd	58
career henan chemical co	58
Hubei xin bonus chemical co. LTD	58
Chongqing Chemdad Co., Ltd	58

View Lastest Price from 1,5-Naphthalenedisulfonic acid manufacturers

Update time	Product	Price	Min. Order	Purity	Supply Ability	Manufacturer
2024-12-17	1,5-Naphthalenedisulfonic acid 81-04-9	US $30.00 / kg	1kg	98%	2000kg	hebei hongtan Biotechnology Co., Ltd
2024-12-13	1,5-Naphthalenedisulfonic acid 81-04-9	US $0.00 / KG	1KG	98.0%	500kg/month	WUHAN FORTUNA CHEMICAL CO., LTD
2024-10-25	1,5-Naphthalenedisulfonic acid 81-04-9	US $0.00 / kg	1kg	0.99	20 tons	Hebei Yanxi Chemical Co., Ltd.

1,5-Naphthalenedisulfonic acid
81-04-9
US $30.00 / kg
98%
hebei hongtan Biotechnology Co., Ltd

1,5-Naphthalenedisulfonic acid
81-04-9
US $0.00 / KG
98.0%
WUHAN FORTUNA CHEMICAL CO., LTD

1,5-Naphthalenedisulfonic acid
81-04-9
US $0.00 / kg
0.99
Hebei Yanxi Chemical Co., Ltd.

1,5-Naphthalenedisulfonic acid Spectrum

1,5-Naphthalenedisulfonic acid(81-04-9)MS 1,5-Naphthalenedisulfonic acid(81-04-9)¹³CNMR 1,5-Naphthalenedisulfonic acid(81-04-9)IR1 1,5-Naphthalenedisulfonic acid(81-04-9)IR2

81-04-9(1,5-Naphthalenedisulfonic acid)Related Search:

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Dinonylnaphthalenesulfonic acid Ethyl 2-(Chlorosulfonyl)acetate 4-Methyl-2-nitroaniline Direct Blue 71 8-AMINO-1,5-NAPHTHALENEDISULFONIC ACID MONOSODIUM SALT

DIRECT YELLOW 50 Fast Red B salt 1,5-NAPHTHALENEDISULFONIC ACID DISODIUM SALT DIHYDRATE 98%,Armstrong acid disodium salt Naphthalene-1,3,5-trisulphonic acid 2-NAPHTHYLAMINE-4,6,8-TRISULFONIC ACID

1-Naphthylamine-4,6,8-trisulfonic acid 2-Amino-1,5-naphthalenedisulfonic acid 1,5-NAPHTHALENEDISULFONIC ACID DIMETHYL ESTER,1,5-NAPHTHALENEDISULFONIC ACID DIMETHYL ESTER 98+%

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1,5-disulfonic acid 5-Naphthalenedisulfonic acid 1,5-phthalenedisulfonic acid NAPHTHALENE-1,5-DISULFONIC ACID DISODIUM SALT naphthalene-1,5-disulphonic acid SODIUM 1,5-NAPHTHALENEDISULFONATE DIBASIC 1,5-Naphthalenedisulphonicacid 1,5-naphthylenedisulfonicacid 2-Naphthylaminedisulfonicacid 1,5-NAPHTHALINEDISULFONIC ACID 1,5-NAPHTHALENEDISULFONIC ACID 1,5-NAPHTHALENEDISULFONIC ACID DISODIUM SALT HYDRATE 1,5-NAPHTHALENE DISULPHONATE 1,5-NAPHTHALENE DISULFONIC ACID SODIUM SALT 1,5-NAPHTHALENE DISULFONIC ACID DISUDIUM SALT 1,5-NAPHTHALENEDISULFONIC ACID, NA SALT DISODIUM 1,5-NAPHTHALENEDISULFONATE HYDRATE DISODIUM NAPHTHALENE-1,5-DISULPHONATE 1,5-NAPHTHALENEDISULFONIC ACID 97+% Naphthalene-γ-disulfonic acid Naphthalene-δ-disulfonic acid 1,5-Naphthalenebissulfonic acid Naphthalene-1,5-bis(sulfonic acid) 1,5-Naphthalenedisul 29685 Naphthalin-1,5-disulfonsure 1,5-NAPHTHALENEDISULFONIC ACID FOR SYNTH 1,5-NaphthaL Hexetidine EP Impurity D Hexetidine Impurity 4 (Hexetidine EP Impurity D) 1,5-Naphthalenedisulfonic acid ISO 9001：2015 REACH Naphthalene-1,5-disulfonic acid tetrahydrate ARMSTRONG ACID Cabalt trioxide, AR naphthalene-1,5-disulfonicaci NSC 9588 81-04-9 80-04-9 1981-04-9 C10H8O6S22H2O Building Blocks Organic Building Blocks Sulfur Compounds Sulfonic/Sulfinic Acids Intermediates of Dyes and Pigments Organic acids bc0001