 Home > Encyclopedia > Gamma acid

Gamma acid

Gamma acid structure

CAS No:
90-51-7
Formula:
C10H9NO4S
Chemical Name:
Gamma acid
Synonyms:
2-Naphthalenesulfonic acid,6-amino-4-hydroxy-;1-Naphthol-3-sulfonic acid,7-amino-;6-Amino-4-hydroxy-2-naphthalenesulfonic acid;Aminonaphthol sulfonic acid γ;6-Amino-4-naphthol-2-sulfonic acid;7-Amino-1-naphthol-3-sulfonic acid;Gamma acid;2-Amino-8-hydroxynaphthalene-6-sulfonic acid;2-Amino-8-hydroxy-6-sulfonaphthalene;7-Amino-1-hydroxy-3-naphthalenesulfonic acid;C.I. Developer 3;2-Amino-8-naphthol-6-sulfonic acid;γ-Acid;2-Amino-6-sulfo-8-naphthol;Y acid;1-Naphthol-7-amino-3-sulfonic acid;NSC 31508;NSC 8630;12235-59-5
Categories:
Organic Chemistry > Amides

Request for Quotation

Gamma acid Basic Attributes

Molecular Weight：

239.25

Exact Mass：

239.25

EC Number：

202-000-8

UNII：

0PLB93P56X

NSC Number：

31508|8630

DSSTox ID：

DTXSID0026547

HScode：

2922299090

Characteristics

PSA：

109

XLogP3：

-0.9

Appearance：

light grey powder

Density：

1.6±0.1 g/cm3

Refractive Index：

1.748

Water Solubility：

4.5g/L(hot water)

Toxicity：

Peritoneal-mouse LD: >500 mg/kg

Flammability characteristics：

Flammable; burning produces toxic nitrogen oxides and sulfur oxide fumes

Safety Information

Transport codes：

UN 2585 8/PG 3

wgk germany：

hazard class code：

safety instructions：

26-27-28-36/37/39-45

RTECS Number：

QK1295250

Marks：

Storage features：

Warehouse ventilated, low temperature and dry

Precautionary statement(s)：

P280-P305 + P351 + P338-P310

Hazard Statements：

H314

GHS Classification：

|Danger|H314 (99.52%): Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]|P260, P264, P280, P301+P330+P331, P303+P361+P353, P304+P340, P305+P351+P338, P310, P321, P363, P405, and P501|Aggregated GHS information provided by 2194 companies from 7 notifications to the ECHA C&L Inventory.

Toxicity

Toxicity class：

moderately toxic

Bioconcentration：

4.07

Gamma acid Use and Manufacturing

Methods of Manufacturing

In the past, β-naphthylamine was used as raw material to produce γ acid, and J acid was by-produced. However, due to the carcinogenic effects of β-naphthylamine, it is no longer used today. At present, G salt (2-naphthol-6, 8-disulfonic acid dipotassium salt) is used as raw material, and it is obtained by ammoniating, alkali melting, and acidification. Product specifications: HG2-205-80. The appearance is light gray paste, and the content of gamma acid (calculated as the coupling value) is greater than 55%. Raw material consumption quota: G salt (100% discount) 1520kg/t, sulfuric acid (99%) 1850kg/t, caustic soda (100% discount) 1200kg/t, sulfur dioxide (industrial product) 330kg/t, ammonia (99%) 485kg/ t.

Uses

Used as an intermediate for reactive dyes and direct dyes. Used for direct diazo black BH, direct dark brown M, direct date red GB, direct red F, direct gray D, direct N and direct lightfast gray, etc.

Manufacturing Info：

2-Naphthalenesulfonic acid, 6-amino-4-hydroxy-: ACTIVE

Computed Properties

Molecular Weight:239.25
XLogP3:-0.9
Hydrogen Bond Donor Count:3
Hydrogen Bond Acceptor Count:5
Rotatable Bond Count:1
Exact Mass:239.02522894
Monoisotopic Mass:239.02522894
Topological Polar Surface Area:109
Heavy Atom Count:16
Complexity:350
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes

Material

Sodium hydroxide

Ammonia

Recommended Suppliers of Gamma acid

Hangzhou Royalchem Co.,LTD Contact Supplier

CN
2 YRS

Business licensed

Trader Supplier of Pharmaceutical intermediates

2-Amino-8-Naphthol-6-Sulfonic Acid RC01281

Unit Price: $1 /KG EXW

CAS No.: 90-51-7

Grade: Industrial Grade

Content: 99%

Inquiry
LEADER BIOCHEMICAL GROUP Contact Supplier

CN
8 YRS

Business licensed Certified factory

Manufactory Supplier of Biochemicals Ingredients,Vitamin Amino Acid Ingredients,Cosmestic Ingredients,Pharma Chemicals,Organic Fine Chemicals,Food Nutrient Ingredients,Natural Plant Ingredients,APIS Intermidiates,Daily Chemicals,Agricultural Chemicals,Surfactant Chemicals,Ultraviolet Absorbents,Antioxidant Ingredients,Scientific Research Chemical,Flavors and Fragrances Chemicals

China Most Professional Factory Supply High Qulity 6-Amino-4-hydroxy-2-naphthalenesulfonic acid CAS 90-51-7

CAS No.: 90-51-7

Grade: Pharmaceutical Grade

Content: 99%

Inquiry