Shanghai Nianxing Industrial Co., Ltd
China
Product Name: 2-Naphthalenesulfonic acid
Price: Check
Purity: 70.0%
Stocking Period: 10 Day
Contact: Yang
Email: sales@echemcloud.com

Shanghai Jizhi Biochemical Technology Co., Ltd
China
Product Name: 2-Naphthalenesulfonic acid
Price: ￥88.0/25g ￥228.0/100g ￥728.0/500g
Purity: 98.0%
Stocking Period: Inquiry
Contact: Liu jia
Email: 2130147988@qq.com

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

Henan Tianfu Chemical Co., Ltd.
China
Product Name: naphthalene-2-sulfonic acid
Price: $Inquiry/1kg $Inquiry/25kg $Inquiry/1000kg $Inquiry/10ton
Purity: 99.0%
Stocking Period: Inquiry
Contact: Anson
Email: info@tianfuchem.com

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

120-18-3

120-18-3 structure

120-18-3 structure

Name: 2-Naphthalenesulfonic acid
Chemical Name: naphthalene-2-sulfonic acid
CAS Number: 120-18-3
Molecular Formula: C₁₀H₈O₃S
Molecular Weight: 208.234
Catalog: Organic raw materials Hydrocarbon compounds and their derivatives Hydrocarbon sulfonate
Create Date: 2018-05-16 08:00:00
Modify Date: 2025-08-20 20:00:01

Name	naphthalene-2-sulfonic acid
Synonyms	naphthalene-6-sulfonic acid kyselina2-naftalensulfonova 2-Naphthalenesulfonic acid β-Naphthalenesulfonic acid 2-Naphthalene Sulfonic Acid 2-Sulfonaphthalene Naphthalene-2-Sulfonic Acid Hydrate NAPHTHALENE-2-SULFONIC ACID Dirinal NSK EINECS 204-375-3 naphthalene-2-sulphonic acid 2-naphthalenesulphonic acid MFCD00004089 2-Naphthalenesulfoni napthalene-2-sulfonic acid 2-Naphthalenesulfonic acid hydrate

Density	1.4±0.1 g/cm3
Melting Point	124 °C
Molecular Formula	C₁₀H₈O₃S
Molecular Weight	208.234
Exact Mass	208.019409
PSA	62.75000
LogP	1.70
Vapour Pressure	7.05E-12mmHg at 25°C
Index of Refraction	1.670

CHEMICAL IDENTIFICATION

RTECS NUMBER :: QK1225000

CHEMICAL NAME :: 2-Naphthalenesulfonic acid

CAS REGISTRY NUMBER :: 120-18-3

BEILSTEIN REFERENCE NO. :: 1955756

LAST UPDATED :: 199701

DATA ITEMS CITED :: 2

MOLECULAR FORMULA :: C10-H8-O3-S

MOLECULAR WEIGHT :: 208.24

WISWESSER LINE NOTATION :: L66J CSWQ

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

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

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 4440 mg/kg

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

REFERENCE :: GISAAA Gigiena i Sanitariya. For English translation, see HYSAAV. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR) V.1- 1936- Volume(issue)/page/year: 39(10),101,1974

Symbol	GHS05
Signal Word	Danger
Hazard Statements	H290-H314
Precautionary Statements	P260-P280-P303 + P361 + P353-P304 + P340 + P310-P305 + P351 + P338
Hazard Codes	C:Corrosive;
Risk Phrases	R35
Safety Phrases	S26-S36/37/39-S45
RIDADR	UN 2583 8/PG 2
WGK Germany	1
RTECS	QK1225000
Packaging Group	III
Hazard Class	8
HS Code	2904100000

Precursor 9
91-20-3 91-60-1 93-11-8 5586-15-2
532-02-5 613-49-0 63296-70-8 5138-53-4
81-06-1
DownStream 10
92-41-1 581-75-9 5724-16-3 525-37-1
6094-26-4 86-66-8 513-81-5 493-01-6
493-02-7 935-31-9

HS Code	2904100000
Summary	2904100000 derivatives containing only sulpho groups, their salts and ethyl esters。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:5.5%。General tariff:30.0%

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