1-Methylnaphthalene
- CAS No.
- 90-12-0
- Chemical Name:
- 1-Methylnaphthalene
- Synonyms
- Α-METHYLNAPHTHALENE;Naphthalene,1-methyl-;ALPHA-METHYLNAPHTHALENE;FEMA 3193;femanumber3193;1-Methylnaphth;1-Methylphthalene;1-Methylnaphthene;1-methyl-naphthalen;1-METHYLNAPHTHALENE
- CBNumber:
- CB4127653
- Molecular Formula:
- C11H10
- Molecular Weight:
- 142.2
- MOL File:
- 90-12-0.mol
- MSDS File:
- SDS
- Modify Date:
- 2025/1/21 19:06:49
| Melting point | −22 °C(lit.) |
|---|---|
| Boiling point | 240-243 °C(lit.) |
| Density | 1.001 g/mL at 25 °C(lit.) |
| vapor pressure | 2 hPa (25 °C) |
| refractive index |
n |
| FEMA | 3193 | 1-METHYLNAPHTHALENE |
| Flash point | 180 °F |
| storage temp. | Store below +30°C. |
| solubility | 0.026g/l |
| pka | 37(at 25℃) |
| form | Liquid |
| color | Clear colorless to yellow |
| Odor | at 1.00 % in dipropylene glycol. naphthyl chemical medicinal camphor |
| Odor Type | naphthyl |
| biological source | synthetic |
| explosive limit | 0.7-6.5%(V) |
| Water Solubility | 0.026 g/L (25 ºC) |
| JECFA Number | 1335 |
| BRN | 506793 |
| Exposure limits | ACGIH: TWA 0.5 ppm (Skin) |
| Dielectric constant | 2.7（20℃） |
| Stability | Stable. Combustible. Incompatible with strong oxidizing agents, oxygen. |
| InChIKey | QPUYECUOLPXSFR-UHFFFAOYSA-N |
| LogP | 3.91 |
| CAS DataBase Reference | 90-12-0(CAS DataBase Reference) |
| NIST Chemistry Reference | Naphthalene, 1-methyl-(90-12-0) |
| EPA Substance Registry System | 1-Methylnaphthalene (90-12-0) |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |    GHS07,GHS08,GHS09 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Danger | |||||||||
| Hazard statements | H302-H304-H411 | |||||||||
| Precautionary statements | P273-P301+P310+P331-P301+P312+P330 | |||||||||
| Hazard Codes | Xn,N,T | |||||||||
| Risk Statements | 22-36/37/38-42/43-51/53-39/23/24/25-23/24/25-20/21/22 | |||||||||
| Safety Statements | 7-26-36/37/39-61-45-36/37-23-36 | |||||||||
| RIDADR | UN 3082 9/PG 3 | |||||||||
| WGK Germany | 2 | |||||||||
| RTECS | QJ9630000 | |||||||||
| Autoignition Temperature | 984 °F | |||||||||
| TSCA | Yes | |||||||||
| HazardClass | 9 | |||||||||
| PackingGroup | III | |||||||||
| HS Code | 29029080 | |||||||||
| Hazardous Substances Data | 90-12-0(Hazardous Substances Data) | |||||||||
| Toxicity | LD50 orally in Rabbit: 1840 mg/kg | |||||||||
| NFPA 704 |
|
1-Methylnaphthalene price More Price(16)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich(India) | W319309 | 1-Methylnaphthalene ≥95% | 90-12-0 | 1SAMPLE-K | ₹4880.63 | 2022-06-14 | Buy |
| Sigma-Aldrich(India) | W319309 | 1-Methylnaphthalene ≥95% | 90-12-0 | 100G | ₹11035.35 | 2022-06-14 | Buy |
| Sigma-Aldrich(India) | W319309 | 1-Methylnaphthalene ≥95% | 90-12-0 | 1KG | ₹14960.4 | 2022-06-14 | Buy |
| Sigma-Aldrich(India) | W319309 | 1-Methylnaphthalene ≥95% | 90-12-0 | 5KG | ₹40236.9 | 2022-06-14 | Buy |
| Sigma-Aldrich(India) | M56808 | 1-Methylnaphthalene 95% | 90-12-0 | 5G | ₹952.5 | 2022-06-14 | Buy |
1-Methylnaphthalene Chemical Properties,Uses,Production
Description
1-methylnaphthalene is a methylnaphthalene carrying a methyl substituent at position. It is a polycyclic aromatic hydrocarbon (PAH). It is present in cigarette smoke, wood smoke, tar, asphalt, and at some hazardous waste sites. The main use of 1-methylnaphthalene is as a raw material for naphthoic acid, fluorescent whitening agents, and surfactants. It is also used as a raw material for dyestuff dispersants and heat transfer oils, and as a solvent for agricultural chemical.
Chemical Properties
1-methylnaphthalene is a colorless, bluefluorescing liquid with an earthy, phenolic odor. It is insoluble in water but dissolves in alcohol and ether. With a density greater than water, this combustible substance is obtained from coal tar and used in organic synthesis. It has a role as a carcinogenic agent and a plant metabolite.
Occurrence
Methylnaphthalene was identified as a volatile component of cassava, roasted filberts and nectarines. Assorted types of lima, pinto, red kidney, black, navy and mung beans, soybeans, split peas and lentils were found to contain 1-methylnaphthalene at concentrations ranging from 2.8 to 49.2 ppb.
Uses
The main uses of methylnaphthalene are as a raw material for dyestuff dispersants and heat transfer oils, and as a solvent for agricultural chemical. It is used in insecticide manufacturing; manufacture of phthalic anhydride; solvent in organic synthesis; asphalt and naptha constituent. It is also used as a test substance for the determination of the cetane number of diesel fuels. Further, it is employed in the preparation of 1-methylnaphthalene-d10 using deuterium oxide, sodium deuteroxide.
Definition
ChEBI: 1-methylnaphthalene is a methylnaphthalene carrying a methyl substituent at position 1. It has a role as a carcinogenic agent and a plant metabolite.
Preparation
1-Methylnaphthalene is primarily derived from coal tar and petroleum oils. It is present in high-temperature coal tar in a concentration of 0.5% and is produced industrially from the methylnaphthalene fraction, which boils between 240 and 245 °C, by redistillation of the 2-methylnaphthalene filtrate following crystallization and separation of 2-methylnaphthalene.
General Description
1-methylnaphthalene is a colorless liquid. Freezing point -22 °C (7.6 °F). Boiling point 240-243 °C (464-469 °F). Flash point 82 °C (180 °F). Denser than water. Derived from coal tar and used in organic synthesis.
Air & Water Reactions
Insoluble in water.
Reactivity Profile
1-Methylnaphthalene is sensitive to heat. Reacts with strong oxidizing agents. Incompatible with oxygen and peroxides .
Hazard
Moderate fire risk. Lower respiratory tractirritant and lung damage. Questionable carcinogen.
Health Hazard
Harmful if inhaled. Liquid causes irritation of the eyes and skin and skin photosensitization. Harmful if swallowed. Chronic exposure may cause liver or kidney damage.
Fire Hazard
1-Methylnaphthalene is combustible.
Carcinogenicity
The carcinogenic potential of 1- and 2-methyl was investigated in B6C3F1 mice. Female and male mice were given methylnaphthalene in their diets for 81 weeks. The results indicated that 1-methyl was a possible weak carcinogen in the lung of male but not female mice whereas 2-methyl did not possess unequivocal carcinogenic potential in these mice.
1-Methylnaphthalene Preparation Products And Raw materials
Raw materials
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chevron_right| Supplier | Tel | Country | ProdList | Advantage | Inquiry |
|---|---|---|---|---|---|
| JSK Chemicals | +919879767970 | Gujarat, India | 3753 | 58 | Inquiry |
| TCI Chemicals (India) Pvt. Ltd. | 1800 425 7889 | New Delhi, India | 6768 | 58 | Inquiry |
| Oceanic Pharmachem Pvt., Ltd. (OPPL) | 91-22-42128600 | Maharashtra, India | 946 | 58 | Inquiry |
| CLEARSYNTH LABS LTD. | +91-22-45045900 | Hyderabad, India | 6257 | 58 | Inquiry |
| Alfa Aesar | 1 800 209 7001 | Maharashtra, India | 6905 | 58 | Inquiry |
| Triveni chemicals | 08048762458 | New Delhi, India | 6088 | 58 | Inquiry |
| Spectrochem Private Limited | 08048372608Ext 246 | Maharashtra, India | 1055 | 58 | Inquiry |
| Vyas Bio Life Sciences Pvt. Ltd | -65546373 | Hyderabad, India | 1213 | 58 | Inquiry |
| Shaanxi Didu New Materials Co. Ltd | +86-89586680 +86-13289823923 | China | 8670 | 58 | Inquiry |
| Hebei Weibang Biotechnology Co., Ltd | +8615531157085 | China | 8806 | 58 | Inquiry |
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