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2,3-Dimethylnaphthalene

2,3-Dimethylnaphthalene Structure
2,3-Dimethylnaphthalene structure
CAS No.
581-40-8
Chemical Name:
2,3-Dimethylnaphthalene
Synonyms
naphthalene,2,3-dimethyl-;Guajen;NSC 36850;DimethylNaphthalein;2,3-Dimethylnaphthaline;2,3-Dimethylnaphthalene;2,3-Dimethylnaphthalene >2,3-Dimethylnaphthalene 97%;2,3-Dimethylnaphthalene,95%;2,3-Dimethylnaphthalene,97%
CBNumber:
CB4434511
Molecular Formula:
C12H12
Molecular Weight:
156.22
MDL Number:
MFCD00004119
MOL File:
581-40-8.mol
MSDS File:
SDS
Last updated:2026-09-12 18:52:49
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2,3-Dimethylnaphthalene Properties

Melting point 103-104 °C (lit.)
Boiling point 269 °C (lit.)
Density 1.0030
refractive index 1.5060
Flash point 265-268°C
form powder to crystal
color White to Light yellow to Light orange
Water Solubility Solubility in toluene (almost transparency). Insoluble in water.
BRN 1852621
Henry's Law Constant 1.6×10-2 mol/(m3Pa) at 25℃, Mackay et al. (2006)
InChI 1S/C12H12/c1-9-7-11-5-3-4-6-12(11)8-10(9)2/h3-8H,1-2H3
InChIKey WWGUMAYGTYQSGA-UHFFFAOYSA-N
SMILES Cc1cc2ccccc2cc1C
LogP 4.400
CAS DataBase Reference 581-40-8(CAS DataBase Reference)
FDA UNII 35DJ6SE17O
EPA Substance Registry System 2,3-Dimethylnaphthalene (581-40-8)
UNSPSC Code 12352100
NACRES NA.22

SAFETY

Risk and Safety Statements

Symbol(GHS)  Exclamation Mark (GHS07)
GHS07
Signal word  Warning
Hazard statements  H302
Precautionary statements  P264-P270-P301+P312-P501
PPE dust mask type N95 (US), Eyeshields, Gloves
Hazard Codes  Xn
Risk Statements  22
Safety Statements  23-24/25
WGK Germany  3
HS Code  29029000
Storage Class 11 - Combustible Solids
Hazard Classifications Acute Tox. 4 Oral
NFPA 704
1
1 0

2,3-Dimethylnaphthalene price More Price(28)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich S295175 2,3-DIMETHYL-NAPHTHALENE AldrichCPR 581-40-8 1 unit $197 2026-04-30 Buy
Sigma-Aldrich D170801 2,3-Dimethylnaphthalene 97% 581-40-8 1g $78.9 2026-04-30 Buy
Sigma-Aldrich S295175 2,3-DIMETHYL-NAPHTHALENE AldrichCPR 581-40-8 1g $179 2024-03-01 Buy
TCI Chemical D0750 2,3-Dimethylnaphthalene >98.0%(GC) 581-40-8 1g $121 2026-04-30 Buy
Usbiological 271083 2,3-Dimethylnaphthalene Asreported 581-40-8 1g $346 2026-06-03 Buy
Product number Packaging Price Buy
S295175 1 unit $197 Buy
D170801 1g $78.9 Buy
S295175 1g $179 Buy
D0750 1g $121 Buy
271083 1g $346 Buy

2,3-Dimethylnaphthalene Chemical Properties, Uses, Production

Chemical Properties

white flakes

Uses

It is used in the identification of individual aromatic hydrocarbons in kerosene fraction (b.p. 150-250°).

Definition

ChEBI: A dimethylnaphthalene carrying methyl groups at positions 2 and 3.

Purification Methods

Steam distil the naphthalene and crystallise it from EtOH. [Beilstein 5 IV 1713.]

2,3-Dimethylnaphthalene synthesis

67-56-1
91-20-3
581-40-8
582-16-1
575-43-9
581-42-0
575-37-1
571-58-4
Synthesis of 2,3-Dimethylnaphthalene from Methanol and Naphthalene

2,3-Dimethylnaphthalene Preparation Products And Raw materials

Raw materials

6,7-Dimethyltetralin Cyclopropene, 1,2-dichloro-3,3-difluoro- Naphthalene, 1,2,3,4-tetrahydro-2,3-bis(methylene)- 1,8-Dimethylnaphthalene 1,7-Dimethylnaphthalene
1,6-Dimethylnaphthalene 1,2-Dimethylnaphthalene 1,3-Dimethylnaphthalene 2,7-Dimethylnaphthalene 1,5-Dimethylnaphthalene
1,4-Dimethylnaphthalene

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Preparation Products

Decahydro-2,3-dimethylnaphthalene 1,2,3-Trimethylnaphthalene

2,3-Dimethylnaphthalene Suppliers

Global Suppliers ( 151)
Supplier Tel Email Country ProdList Advantage
J & K SCIENTIFIC LTD. 18210857532 18210857532 jkinfo@jkchemical.com China 96815 76
Alfa Aesar 400-6106006 saleschina@alfa-asia.com China 30103 84
TCI (Shanghai) Development Co., Ltd. 021-67121386 Sales-CN@TCIchemicals.com China 24512 81
Energy Chemical 400-0056266 sales8178@energy-chemical.com China 44850 61
Shanghai Longsheng chemical Co.,Ltd. 58099637 13585536065 sales@shlschem.com China 9880 59
Shandong Xiya Chemical Co., Ltd 13355009207 13355009207 3007715519@qq.com China 18722 57
Tianjin heowns Biochemical Technology Co., Ltd. 400 638 7771 sales@heowns.com China 14412 57
Maya High Purity Chemicals +86 (573) 82222445 (0)18006601000 452520369 sales@maya-r.com China 11693 57
Jiangsu Aikon Biopharmaceutical R&D co.,Ltd. 025-66113011 13913916777 cfzhang@aikonchem.com China 19902 55
TOKYO CHEMICAL INDUSTRY CO., LTD. 03-36680489 Sales-JP@TCIchemicals.com Japan 28364 80
Supplier Advantage
J & K SCIENTIFIC LTD. 76
Alfa Aesar 84
TCI (Shanghai) Development Co., Ltd. 81
Energy Chemical 61
Shanghai Longsheng chemical Co.,Ltd. 59
Shandong Xiya Chemical Co., Ltd 57
Tianjin heowns Biochemical Technology Co., Ltd. 57
Maya High Purity Chemicals 57
Jiangsu Aikon Biopharmaceutical R&D co.,Ltd. 55
TOKYO CHEMICAL INDUSTRY CO., LTD. 80

View Latest Price from 2,3-Dimethylnaphthalene manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
2,3-dimethylnaphthalene pictures 2020-02-19 2,3-dimethylnaphthalene
581-40-8
 $1.00 1KG 98% HPLC 10Tons Career Henan Chemical Co

2,3-Dimethylnaphthalene Spectrum

2,3-DIMETHYLNAPHTHALENE(581-40-8)MS2,3-DIMETHYLNAPHTHALENE(581-40-8)1HNMR2,3-DIMETHYLNAPHTHALENE(581-40-8)13CNMR2,3-DIMETHYLNAPHTHALENE(581-40-8)IR12,3-DIMETHYLNAPHTHALENE(581-40-8)IR22,3-DIMETHYLNAPHTHALENE(581-40-8)Raman

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DimethylNaphthalein 2,3-Dimethylnaphthalene,97% 2,3-DIMETHYLNAPHTHALENE 98+% Guajen naphthalene,2,3-dimethyl- 2,3-Dimethylnaphthalene,95% 2,3-Dimethylnaphthaline NSC 36850 2,3-Dimethylnaphthalene 97% 2,3-Dimethylnaphthalene > Sodium polystyrene sulfonate Standard (Mw 3,160,000) 2,3-Dimethylnaphthalene in isooctane 2,3-Dimethylnaphthalene Solution in Toluene 2,3-Dimethylnaphthalene 581-40-8 581408 Organic Building Blocks Building Blocks Arenes Arenes Building Blocks Organic Building Blocks Naphthalene derivatives