Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: 2-Aminonaphthalene-1-sulfonic acid
Price: $Inquiry/100g $Inquiry/1kg $Inquiry/100kg $Inquiry/1000kg
Purity: 98.0%
Stocking Period: Inquiry
Contact: Ms Wang
Email: enquiry@dycnchem.com

Zhongshan Xingrui Chemical Co. , Ltd.
China
Product Name: 2-Aminonaphthalene-1-sulfonic acid
Price: ￥Inquiry/25kg
Purity: 99.0%
Stocking Period: Inquiry
Contact: Wang Jie
Email: 3096638339@qq.com

81-16-3

81-16-3 structure

Name: 2-Aminonaphthalene-1-sulfonic acid
Chemical Name: 2-Naphthylamine-1-Sulfonic Acid
CAS Number: 81-16-3
Molecular Formula: C₁₀H₉NO₃S
Molecular Weight: 223.248
Catalog: Organic raw materials Carboxylic compounds and derivatives Halogenation, sulfonation, nitration or nitrosation of carboxylic acids
Create Date: 2018-05-20 08:00:00
Modify Date: 2025-08-21 13:01:25

Name	2-Naphthylamine-1-Sulfonic Acid
Synonyms	Tobias acid MFCD00003988 2-Naphthylamine-1-sulfonic acid (Tobias acid) 2-Naphthylamine-1-sulphonic acid EINECS 201-331-5 1-Naphthalenesulfonic acid, 2-amino- 2-Amino-1-naphthalenesulfonic acid 2-Aminonaphthalene-1-sulfonic acid 2-Amino-naphthalene-1-sulfonic acid

Density	1.5±0.1 g/cm3
Melting Point	180ºC
Molecular Formula	C₁₀H₉NO₃S
Molecular Weight	223.248
Exact Mass	223.030319
PSA	88.77000
LogP	1.32
Index of Refraction	1.713

CHEMICAL IDENTIFICATION

RTECS NUMBER :: QK1250000

CHEMICAL NAME :: 1-Naphthalenesulfonic acid, 2-amino-

CAS REGISTRY NUMBER :: 81-16-3

BEILSTEIN REFERENCE NO. :: 0613084

LAST UPDATED :: 199701

DATA ITEMS CITED :: 3

MOLECULAR FORMULA :: C10-H9-N-O3-S

MOLECULAR WEIGHT :: 223.26

WISWESSER LINE NOTATION :: L66J BSWQ CZ

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: Standard Draize test

ROUTE OF EXPOSURE :: Administration into the eye

SPECIES OBSERVED :: Rodent - rabbit

REFERENCE :: 85JCAE "Prehled Prumyslove Toxikologie; Organicke Latky," Marhold, J., Prague, Czechoslovakia, Avicenum, 1986 Volume(issue)/page/year: -,1057,1986 ** ACUTE TOXICITY DATA **

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 19400 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: 85JCAE "Prehled Prumyslove Toxikologie; Organicke Latky," Marhold, J., Prague, Czechoslovakia, Avicenum, 1986 Volume(issue)/page/year: -,1057,1986

Personal Protective Equipment	Eyeshields;Gloves;type N95 (US);type P1 (EN143) respirator filter
Hazard Codes	Xi
Risk Phrases	R36/37/38;R40
Safety Phrases	S26-S36/37/39
RIDADR	2585
WGK Germany	1
RTECS	QK1250000
Packaging Group	III
Hazard Class	8
HS Code	2921450090

110-91-8

90-20-0

112291-51-7

81-16-3

Literature: US5239063 A1, ;

567-47-5

81-16-3

Literature: Journal fuer Praktische Chemie (Leipzig), , vol. <2>70, p. 347 Journal fuer Praktische Chemie (Leipzig), , vol. <2>69, p. 80 Journal fuer Praktische Chemie (Leipzig), , vol. <2> 69, p. 73 Journal fuer Praktische Chemie (Leipzig), , vol. <2> 70, p. 349

91-59-8

81-16-3

Literature: DE392460 ; Fortschr. Teerfarbenfabr. Verw. Industriezweige, vol. 14, p. 405

567-47-5

7664-41-7

81-16-3

Precursor 6
110-91-8 90-20-0 112291-51-7 567-47-5
91-59-8 7664-41-7
DownStream 10
580-13-2 93-00-5 494-44-0 86-60-2
81-05-0 91-60-1 205-25-4 118-33-2
86-65-7 575-44-0

HS Code	2921450090
Summary	2921450090 1-naphthylamine (α-naphthylamine), 2-naphthylamine (β-naphthylamine) and their derivatives; salts thereof。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:6.5%。General tariff:30.0%

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