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D Acid

D Acid structure

CAS No:
81-05-0
Formula:
C10H9NO3S
Chemical Name:
D Acid
Synonyms:
1-Naphthalenesulfonic acid,6-amino-;6-Amino-1-naphthalenesulfonic acid;Dahl acid;Dahl's acid;Gycolan Green BFL;2-Naphthylamine-5-sulfonic acid;6-Naphthylamine-1-sulfonic acid;2-Amino-5-naphthalenesulfonic acid;2-Amino-5-sulfonaphthalene;D Acid;2-Naphthylamino-5-sulfonic acid
Categories:
Organic Chemistry > Amides

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D Acid Basic Attributes

Molecular Weight：

223.25

Exact Mass：

223.25

EC Number：

201-318-4

UNII：

Y4SEI692W3

DSSTox ID：

DTXSID10230836

HScode：

29269095

Characteristics

PSA：

88.8

XLogP3：

1.2

Appearance：

Light gray wet cake/white powder

Density：

1.5±0.1 g/cm3

Refractive Index：

1.713

Water Solubility：

0.33g/L(20 ºC)

Safety Information

Packing level：

III

Hazard category：

Transport codes：

1759

Marks：

Precautionary statement(s)：

P261, P264, P271, P280, P302+P352, P304+P340, P305+P351+P338, P312, P321, P332+P313, P337+P313, P362, P403+P233, P405, P501

Hazard Statements：

H315

GHS Classification：

|Warning|H315 (100%): Causes skin irritation [Warning Skin corrosion/irritation]|P261, P264, P271, P280, P302+P352, P304+P340, P305+P351+P338, P312, P321, P332+P313, P337+P313, P362, P403+P233, P405, and P501|Aggregated GHS information provided by 2 companies from 2 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.

D Acid Use and Manufacturing

Methods of Manufacturing

It is obtained by sulfonation of β-naphthylamine. The sulfonation reaction is carried out at 50-60℃ to produce a mixture of 2-naphthylamine-5-sulfonic acid and 2-naphthylamine-8-sulfonic acid, which is diluted with water and adjusted to pH 9 with sodium hydroxide solution, filtered and evaporated Obtain the sodium salt. Then it is extracted and separated with ethanol, and the extract is evaporated to dryness to obtain 2-naphthylamine-5-sulfonic acid sodium salt, which is then hydrolyzed and acidified to obtain the finished product.

Uses

Used as a dye intermediate.

Computed Properties

Molecular Weight:223.25
XLogP3:1.2
Hydrogen Bond Donor Count:2
Hydrogen Bond Acceptor Count:4
Rotatable Bond Count:1
Exact Mass:223.03031432
Monoisotopic Mass:223.03031432
Topological Polar Surface Area:88.8
Heavy Atom Count:15
Complexity:322
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes

Material

Sulfuric acid