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Safety Information

8.20809

Sigma-Aldrich

1-Methylnaphthalene

for synthesis

Synonym(s):

1-Methylnaphthalene

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About This Item

Empirical Formula (Hill Notation):
C11H10
CAS Number:
90-12-0
Molecular Weight:
142.20
MDL number:
MFCD00004034
UNSPSC Code:
12352005
EC Index Number:
201-966-8
NACRES:
NA.22

vapor pressure

2 hPa ( 25 °C)

Quality Level

200

Assay

≥94.0% (GC)

form

liquid

autoignition temp.

529 °C

potency

1840 mg/kg LD50, oral (Rat)

expl. lim.

0.7-6.5 % (v/v)

bp

244-245 °C/1013 mbar

mp

<-30 °C

transition temp

flash point 82 °C

solubility

0.026 g/L

density

1.02 g/cm3 at 20 °C

storage temp.

2-30°C

InChI

1S/C11H10/c1-9-5-4-7-10-6-2-3-8-11(9)10/h2-8H,1H3

InChI key

QPUYECUOLPXSFR-UHFFFAOYSA-N

Application

  • Solvent-assisted microextraction: 1-Methylnaphthalene was used in the development of sponge-like porous manganese(II, III) oxide coatings for solvent-assisted solid-phase microextraction, demonstrating its utility in environmental monitoring and analysis of polycyclic aromatic hydrocarbons (Saraji and Nobakht, 2022).
  • Catalytic applications: As a tar-type compound, 1-Methylnaphthalene was investigated for its degradation under mild conditions using TiO2-supported Pd catalysts, emphasizing its importance in industrial applications for cleaner production technologies (Raad et al., 2021).
  • Advanced oxidation processes: Research involving nano-MoO2 and peroxymonosulfate demonstrated the effective degradation of PAH derivatives, including 1-Methylnaphthalene, underscoring its relevance in water treatment technologies and pollution control (Chen et al., 2021).

Analysis Note

Assay (GC, area%): ≥ 94.0 % (a/a)
Density (d 20 °C/ 4 °C): 1.015 - 1.025
Identity (IR): passes test

Signal Word

Danger

Hazard Statements

H302 - H304 - H411

Hazard Classifications

Acute Tox. 4 Oral - Aquatic Chronic 2 - Asp. Tox. 1

Storage Class Code

10 - Combustible liquids

WGK

WGK 2

Flash Point(F)

179.6 °F - closed cup

Flash Point(C)

82 °C - closed cup

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

FSL

Flammable liquids
Type 3 petroleums
Hazardous rank III
Water insoluble liquid

ISHL Indicated Name

Substances Subject to be Indicated Names

ISHL Notified Names

Substances Subject to be Notified Names

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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