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S acid

S acid structure

CAS No:
83-64-7
Formula:
C10H9NO4S
Chemical Name:
S acid
Synonyms:
1-Naphthalenesulfonic acid,4-amino-5-hydroxy-;1-Naphthol-5-sulfonic acid,8-amino-;4-Amino-5-hydroxy-1-naphthalenesulfonic acid;Aminonaphthol sulfonic acid S;4-Amino-5-naphthol-1-sulfonic acid;8-Amino-1-naphthol-5-sulfonic acid;Chicago acid S;S acid;1-Amino-8-hydroxy-4-naphthalenesulfonic acid;1-Amino-8-naphthol-4-sulfonic acid;NSC 10434;NSC 178276;NSC 7555;8-Amino-1-hydroxynaphthalene-5-sulfonic acid
Categories:
Organic Chemistry > Carboxylic Acids and Derivatives

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Description

GREY POWDER

S acid Basic Attributes

Molecular Weight：

239.25

Exact Mass：

239.25

EC Number：

201-491-6

NSC Number：

178276|10434|7555

DSSTox ID：

DTXSID1058896

HScode：

2922299090

Characteristics

PSA：

109.00000

XLogP3：

3.03630

Appearance：

GREY POWDER

Density：

1.4338 (rough estimate)

Toxicity：

Oral-rat LD50: 6210 mg/kg

Flammability characteristics：

Flammable; burning produces toxic nitrogen oxides and sulfur oxide fumes

Safety Information

Transport codes：

UN 2583 8/PG 2

wgk germany：

hazard class code：

safety instructions：

26-27-36/37/39-45

RTECS Number：

QK1295000

Marks：

Storage features：

Warehouse ventilated, low temperature and dry

Precautionary statement(s)：

P260, P264, P280, P301+P330+P331, P303+P361+P353, P304+P340, P305+P351+P338, P310, P321, P363, P405, P501

Hazard Statements：

H314

GHS Classification：

|Danger|H314 (97.44%): 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 39 companies from 2 notifications to the ECHA C&L Inventory.

Toxicity

Toxicity class：

practically nontoxic

S acid Use and Manufacturing

Methods of Manufacturing

It is obtained by alkali melting and acidification of 1-naphthylamine-4, 8-disulfonic acid at 200-230℃.

Uses

It is used as an important intermediate in the manufacture of acid dyes and leather dyes, and it is also used in the synthesis of Chicago SS acid etc.

Manufacturing Info：

1-Naphthalenesulfonic acid, 4-amino-5-hydroxy-: ACTIVE

Computed Properties

Molecular Weight:239.25
XLogP3:1.4
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

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1-amino-8-naphthol-4-sulphonic acid

CAS No.: 83-64-7

Content: 99.00%

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