ChemicalBook > Product Catalog >Organic Chemistry >Amides >Sulfonic acids amino compound >7-Amino-1,3-naphthalenedisulfonic acid

7-Amino-1,3-naphthalenedisulfonic acid

CAS No.: 86-65-7

Chemical Name:: 7-Amino-1,3-naphthalenedisulfonic acid

Synonyms: K-ACID;Amido G acid;7-aminonaphthalene-1,3-disulfonic acid;AMINO K ACID;1,3-Disulfo-7-naphthylamine;6,8-Disulfo-2-aminonaphthalene;7-amino-3-naphthalenedisulfonicacid;7-Naphthylamine-1,3-disulfonic acid;7-Amino-1,3-naphthalenedisulfonic acid;2-Amino-6,8-naphthalenedisulfonic acid

CBNumber:: CB8854490

Molecular Formula:: C10H9NO6S2

Molecular Weight:: 303.31

MOL File:: 86-65-7.mol

Modify Date:: 2023/11/6 13:54:44

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7-Amino-1,3-naphthalenedisulfonic acid Properties

Melting point	300°C
Density	1.6329 (rough estimate)
refractive index	1.7330 (estimate)
pka	-0.93±0.40(Predicted)
form	Powder or Needles
color	Off-white to beige-green to light brown
Water Solubility	soluble
CAS DataBase Reference	86-65-7(CAS DataBase Reference)
EPA Substance Registry System	1,3-Naphthalenedisulfonic acid, 7-amino- (86-65-7)

SAFETY

Risk and Safety Statements

Symbol(GHS)

GHS05

Signal word

Danger

Hazard statements

H314

Precautionary statements

P280-P305+P351+P338-P310

Hazard Codes

Risk Statements

Safety Statements

26-28A

RIDADR

1759

HazardClass

PackingGroup

III

HS Code

29214900

NFPA 704

	1
3		0

7-Amino-1,3-naphthalenedisulfonic acid Chemical Properties,Uses,Production

Chemical Properties

off-white to beige-green to light brown. 2-Aminonaphthalene-6,8-disulfonic acid [86-65-7]. (7-aminonaphthalene-1,3-disulfonic acid), amino G acid, C10H9NO6S2, Mr 303.3, and its bis-alkali-metal salts are very soluble in water, but the acid salts, especially the acid potassium salt, are much less soluble.

Uses

Azo dye intermediate.

Production Methods

The disodium or dipotassium salt of 2-hydroxynaphthalene-6,8-disulfonic acid is heated with excess aqueous ammonia and ammonium bisulfite at 185℃ for 18 h. The reaction mixture is basified, heated to remove excess ammonia, neutralized, and evaporated while any residual sulfite is removed. The resulting amino G acid liquor (95 % yield) is used directly for caustic fusion to give g acid, the major outlet.

Safety Profile

Questionable carcinogen with experimental neoplastigenic data. When heated to decomposition it emits toxic fumes of NOx and SOx.

7-Amino-1,3-naphthalenedisulfonic acid Preparation Products And Raw materials

Raw materials

2-Naphthol-6,8-disulfonic acid Ammonia Ammonium bisulfite

Preparation Products

DIRECT ORANGE 72 7,7'-[Ureylenebis[(1-hydroxy-3-sodiosulfonaphthalene-6,2-diyl)azo(4,1-phenylene)azo]]bis[naphthalene-1,3-disulfonic acid disodium] salt MORDANT YELLOW 20 trisodium [7-[[4-[[4-[[4-[[2,4-dihydroxy-5-[(2-hydroxy-5-sulphophenyl)azo]phenyl]azo]benzoyl]amino]-o-tolyl]azo]-o-tolyl]azo]naphthalene-1,3-disulphonato(5-)]cuprate(3-) DIRECT YELLOW 118

7-Hydroxy-8-[[2-methyl-4-[[6,8-bis(sodiosulfo)-2-naphthalenyl]azo]phenyl]azo]naphthalene-1,3-disulfonic acid disodium salt DIRECT YELLOW 117 tetrasodium (4Z)-4-[[4-(6,8-disulfonatonaphthalen-2-yl)diazenylnaphthalen-1-yl]hydrazinylidene]-3-oxo-naphthalene-2,7-disulfonate trisodium 7-[[4-[[4-[[6-[(4-aminobenzoyl)amino]-1-hydroxy-3-sulphonato-2-naphthyl]azo]benzoyl]amino]-o-tolyl]azo]naphthalene-1,3-disulphonate

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7-Amino-1,3-naphthalenedisulfonic acid Suppliers

Global( 102)Suppliers

Supplier	Tel	Country	ProdList	Advantage	Inquiry
Santel Industries	+91-7940075559 +91-7926401417	Gujarat, India	98	58	Inquiry
Corypha Pharmaceuticals Pvt Ltd	+91-9951120896 +91-8886478889	Telangana, India	6	58	Inquiry
Jaffs Dyechem Private Limited	+91-9825035135 +91-7925392314	Gujarat, India	309	58	Inquiry
Mangalam Intermediates	+91-8758025080 +91-9824145269	Gujarat, India	41	58	Inquiry
Matangi Industries LLP	+91-7940372041 +91-9909916939	Gujarat, India	19	58	Inquiry
Emco Dyestuff Pvt. Ltd.	+91 (22) 894 35 21 / 894 49 06	New Delhi, India	189	54	Inquiry
Bhavya Dyes & Chemicals	08066085721Ext 229	Ahmedabad, India	2	58	Inquiry
Everest Intermediates	08048988266	Gujarat, India	13	58	Inquiry
Dhara Chemicals	08048361282Ext 160	Ahmedabad, India	17	58	Inquiry
Alfa Aesar	1 800 209 7001	Maharashtra, India	6913	58	Inquiry

Supplier	Advantage
Santel Industries	58
Corypha Pharmaceuticals Pvt Ltd	58
Jaffs Dyechem Private Limited	58
Mangalam Intermediates	58
Matangi Industries LLP	58
Emco Dyestuff Pvt. Ltd.	54
Bhavya Dyes & Chemicals	58
Everest Intermediates	58
Dhara Chemicals	58
Alfa Aesar	58

7-Amino-1,3-naphthalenedisulfonic acid Spectrum

7-Amino-1,3-naphthalenedisulfonic acid(86-65-7)MS 7-Amino-1,3-naphthalenedisulfonic acid(86-65-7)IR1

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7-amino-3-naphthalenedisulfonicacid AMINO K ACID 7-aminonaphthalene-1,3-disulphonic acid 2-NAPHTHYLAMINE-6,8-DISULFONIC ACID (AMINO G SALT) 1,3-Disulfo-7-naphthylamine 7-Amino-1,3-naphthalenedisulfonic acid, tech. 1,3-Naphthalenedisulfonic acid, 7-amino- 7-Amino-1,3-naphthalenedisulfonic acid 7-Naphthylamine-1,3-disulfonic acid Amino-1,3-naphthalenedisulfonic acid, 7- 6,8-Disulfo-2-aminonaphthalene 2-Amino-6,8-naphthalenedisulfonic acid 2-Aminonaphthalene-6,8-disulfonic acid 7-Amino-1,3-naphthalenedisulfonic acid, t 7-AMino-1,3-naphthalenedisulfonic acid, tech. 100GR 7-Amino-1,3-naphthalenedisulfonic acid ISO 9001：2015 REACH K-ACID 7-aminonaphthalene-1,3-disulfonic acid Amido G acid 7-Amino-1,3-Naphthalene disulfonic acid (K-acid) 86-65-7 C10H9NO6S2 C10H7NK2O6S2 Intermediates of Dyes and Pigments Anilines, Aromatic Amines and Nitro Compounds