Naphthalene-2-sulfonic acid
- CAS No.
- 120-18-3
- Chemical Name:
- Naphthalene-2-sulfonic acid
- Synonyms
- 2-NAPHTHALENESULFONIC ACID;NAPHTHALENE-2-SULPHONIC ACID;Dirinal NSK;2-Sulfonaphthalene;2-Naphthalenesulfoni;β-Naphthalenesulfonic;β-Naphthalenesulfonic;beta-naphthalenesulfonic;beta-naphthylsulfonicacid;2-NAPHTHALENESULFONIC ACI
- CBNumber:
- CB8118079
- Molecular Formula:
- C10H8O3S
- Molecular Weight:
- 208.23
- MDL Number:
- MFCD00004089
- MOL File:
- 120-18-3.mol
Melting point | 124 °C |
---|---|
Boiling point | 317.43°C (rough estimate) |
Density | 1.44 g/cm |
vapor pressure | 2.33Pa at 20℃ |
refractive index | 1.4998 (estimate) |
storage temp. | Inert atmosphere,Room Temperature |
solubility | water: freely soluble(lit.) |
form | solid |
pka | 0.27±0.10(Predicted) |
color | White |
Water Solubility | Soluble in water. |
Sensitive | Hygroscopic |
Merck | 6377 |
LogP | -0.944 at 23℃ |
CAS DataBase Reference | 120-18-3(CAS DataBase Reference) |
EWG's Food Scores | 1 |
FDA UNII | O9S4K2S25E |
EPA Substance Registry System | 2-Naphthalenesulfonic acid (120-18-3) |
SAFETY
Risk and Safety Statements
Symbol(GHS) | ![]() GHS05 |
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Signal word | Danger | |||||||||
Hazard statements | H290-H314 | |||||||||
Precautionary statements | P260-P280-P301+P330+P331-P303+P361+P353-P305+P351+P338+P310 | |||||||||
Hazard Codes | C,F | |||||||||
Risk Statements | 35-34-11 | |||||||||
Safety Statements | 26-36/37/39-45-16 | |||||||||
RIDADR | UN 2583 8/PG 2 | |||||||||
WGK Germany | 1 | |||||||||
RTECS | QK1225000 | |||||||||
Hazard Note | Corrosive | |||||||||
TSCA | Yes | |||||||||
HazardClass | 8 | |||||||||
PackingGroup | III | |||||||||
HS Code | 2904100090 | |||||||||
NFPA 704 |
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Naphthalene-2-sulfonic acid price More Price(12)
Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
---|---|---|---|---|---|---|---|
Sigma-Aldrich | 249548 | 2-Naphthalenesulfonic acid technical grade, 70% | 120-18-3 | 5g | $26 | 2024-03-01 | Buy |
Sigma-Aldrich | 249548 | 2-Naphthalenesulfonic acid technical grade, 70% | 120-18-3 | 100g | $120 | 2024-03-01 | Buy |
Alfa Aesar | H56685 | Naphthalene-2-sulfonic acid, 98% | 120-18-3 | 100g | $95.3 | 2024-03-01 | Buy |
Alfa Aesar | H56685 | Naphthalene-2-sulfonic acid, 98% | 120-18-3 | 500g | $385 | 2024-03-01 | Buy |
TRC | N378503 | Naphthalene-2-sulfonicAcid | 120-18-3 | 1g | $45 | 2021-12-16 | Buy |
Naphthalene-2-sulfonic acid Chemical Properties,Uses,Production
Chemical Properties
Nondeliquescent, white plates.Soluble in water, alcohol, and ether. Combustible.
Uses
Starting point in the manufacture of β-naphthol, β-naphtholsulfonic acid, β-naphthylaminesulfonic acid, etc.
Uses
Naphthalene-2-sulfonic acid is used in making direct dyes, reactive des and employed as dye and agrochemical intermediates.
Definition
ChEBI: Naphthalene-2-sulfonic acid is a naphthalenesulfonic acid in which the sulfo group is linked to position 2 of the naphthalene ring. It has a role as an environmental contaminant and a xenobiotic.
Preparation
Naphthalene-2-sulfonic acid is prepared by sulfonation of naphthalene.
Step: With naphthalene as raw material, 98% sulfuric acid is used as sulfonating agent, and it is obtained by sulfonation at 160-166 ℃. During the sulfonation process, a small amount of α-naphthalenesulfonic acid by-product is generated. By heating, the unstable α-naphthalenesulfonic acid can be hydrolyzed at 140-150 °C to remove the sulfonic acid group, and become naphthalene and sulfuric acid. Naphthalene can be blown out. During the hydrolysis of naphthalene, a small amount of lye should be added to neutralize part of the sulfuric acid. It also acts with naphthalenesulfonic acid to form β-naphthalenesulfonic acid sodium salt crystals, which can be filtered to obtain the finished product of Naphthalene-2-sulfonic acid.
General Description
The fluorescence of 2-naphthalenesulfonic acid (NSA) is effectively quenched by colloidal silver via photoinduced interfacial electron transfer from the excited singlet of NSA to silver. Adsorption behavior of NSA on a conventional macroporous resin Amberlite XAD4 and hypercrosslinked resins NDA101 and NDA100 has been investigated.
Flammability and Explosibility
Non flammable
Purification Methods
Crystallise the acid from conc HCl. The S-benzylisothiuronium salt has m 192o (from aqueous EtOH). [Berger Acta Chem Scand 8 432 1954, Beilstein 11 H 171, 11 IV 527.]
Naphthalene-2-sulfonic acid Preparation Products And Raw materials
Raw materials
1of2
Preparation Products
1of3
Supplier | Tel | Country | ProdList | Advantage | |
---|---|---|---|---|---|
Suzhou Actchem Co., Ltd. | +8618762124502 | actchem@qq.com | China | 27 | 58 |
Hebei Mojin Biotechnology Co., Ltd | +8613288715578 | sales@hbmojin.com | China | 12450 | 58 |
Henan Fengda Chemical Co., Ltd | +86-371-86557731 +86-13613820652 | info@fdachem.com | China | 20294 | 58 |
Capot Chemical Co.,Ltd. | 571-85586718 +8613336195806 | sales@capotchem.com | China | 29798 | 60 |
Shanghai Daken Advanced Materials Co.,Ltd | +86-371-66670886 | info@dakenam.com | China | 16914 | 58 |
Henan Tianfu Chemical Co.,Ltd. | +86-0371-55170693 +86-19937530512 | info@tianfuchem.com | China | 21668 | 55 |
career henan chemical co | +86-0371-86658258 +8613203830695 | sales@coreychem.com | China | 29894 | 58 |
Hubei Jusheng Technology Co.,Ltd. | 18871490254 | linda@hubeijusheng.com | CHINA | 28180 | 58 |
Hebei Guanlang Biotechnology Co., Ltd. | +86-19930503282 | alice@crovellbio.com | China | 8822 | 58 |
Xiamen AmoyChem Co., Ltd | +86-592-6051114 +8618959220845 | sales@amoychem.com | China | 6387 | 58 |
View Lastest Price from Naphthalene-2-sulfonic acid manufacturers
Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
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2024-08-15 | Naphthalene-2-sulfonic acid
120-18-3
|
US $20.00-10.00 / kg | 25kg | 99% | 100T | Hebei Yanxi Chemical Co., Ltd. | |
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2023-12-26 | Naphthalene-2-sulfonic acid
120-18-3
|
US $100.00-1.00 / KG | 1KG | 99% | g-kg-tons, free sample is available | Henan Fengda Chemical Co., Ltd | |
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2023-08-24 | Naphthalene-2-sulfonic acid
120-18-3
|
US $0.00 / KG | 1KG | 99% | 50000KG/month | Hebei Mojin Biotechnology Co., Ltd |
-
- Naphthalene-2-sulfonic acid
120-18-3
- US $20.00-10.00 / kg
- 99%
- Hebei Yanxi Chemical Co., Ltd.
-
- Naphthalene-2-sulfonic acid
120-18-3
- US $100.00-1.00 / KG
- 99%
- Henan Fengda Chemical Co., Ltd
-
- Naphthalene-2-sulfonic acid
120-18-3
- US $0.00 / KG
- 99%
- Hebei Mojin Biotechnology Co., Ltd