1-Methylnaphthalene

Overview IFRA Botanical Request a quote

  • Identifiers

    CAS number
    1321-94-4

    Molecular formula
    C11H10

    SMILES
    CC1=CC=CC2=CC=CC=C12

    Safety labels

    Irritant
    Irritant

    Health Hazard
    Health

    Environmental Hazard
    Environmental

  • Odor profile

    floral 60.74%
    green 52.43%
    sweet 48.84%
    woody 48.03%
    camphoreous 42.94%
    earthy 42.76%
    geranium 40.07%
    oily 39.54%
    rose 39.09%
    pungent 38.46%

    Scent© AI

    Odor threshold>

    • Odor Threshold Low: 0.02 [mmHg]. Odor threshold = 0.02 ppm at 60 °C (detection)
    • THE ODOR THRESHOLD VALUE OF 1-METHYL NAPHTHALENE DETECTED @ ROOM TEMP & 60 DEG WAS 0.02 PPM.

  • Properties

    XLogP3-AA
    3.9 Well soluble in BB, DEP, IAA

    Molecular weight
    142.2 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Moderately slow

    Melting point expt.

    • -8 °F (NTP, 1992)
    • -30.43 °C
    • Melting point: -22 °C
    • -22 °C
    • -8 °F

    Boiling point

    • 450 to 590 °F at 760 mmHg (NTP, 1992)
    • 464 to 469 °F at 760 mmHg (NTP, 1992)
    • 244 °C
    • 241.00 to 245.00 °C. @ 760.00 mm Hg
    • 245 °C
    • 464-469 °F

    Flash point expt.

    • greater than 200 °F (NTP, 1992)
    • 180 °F (NTP, 1992)
    • This chemical has a flash point of >93 °C (>200 °F). It is probably combustible.
    • 180 °F (82 °C) Closed cup
    • 82 °C
    • 180 °F

    Solubility expt.

    • less than 1 mg/mL at 64 °F (NTP, 1992)
    • less than 1 mg/mL at 70 °F (NTP, 1992)
    • In water, 25.0 mg/L at 25 °C
    • In water, 25.8 mg/L at 25 °C
    • Very soluble in ethanol and ether; soluble in benzene
    • 0.0258 mg/mL at 25 °C
    • Solubility in water, g/100ml at 25 °C: 0.003
    • Insoluble in water; Soluble in oils
    • Soluble (in ethanol)

  • Synonyms

    • 1-METHYLNAPHTHALENE
    • 90-12-0
    • METHYLNAPHTHALENE
    • alpha-Methylnaphthalene
    • 1321-94-4
    • Naphthalene, methyl-
    • Naphthalene, 1-methyl-
    • 1-methyl-naphthalene
    • 1-Methylnapththalene
    • alpha-methyl naphthalenes
    • FEMA No. 3193
    • FEMA Number 3193
    • Methyl naphthalene
    • .alpha.-Methylnaphthalene
    • Naphthalene, alpha-methyl-
    • 1-Methyl naphthalene
    • Methyl-1-naphthalene
    • CCRIS 6151
    • HSDB 5268
    • methyl-naphthalene
    • NSC 3574
    • EINECS 201-966-8
    • UNII-E7SK1Y1311
    • DTXSID9020877
    • CHEBI:50717
    • MECHINAFU H
    • METHYNAPH H
    • naphthalene, 1-methyl
    • AI3-15378
    • alpha-methyl-naphthalene
    • E7SK1Y1311
    • NSC-3574
    • MFCD00004034
    • DTXCID30877
    • CHEMBL383808
    • EC 201-966-8
    • 1-METHYLNAPHTHALENE [FHFI]
    • 1-METHYLNAPHTHALENE [HSDB]
    • 1-Methylnaphthalene, analytical standard
    • CAS-90-12-0
    • 1Methylnaphthalene
    • 1-methylnaphtalene
    • a-methylnaphthalene
    • alpha-Methylnaftalen
    • Naphthalene, 1-methyl-; 1-Methylnaphthalene; Mechinafu H; Methynaph H; NSC 3574; a-Methylnaphthalene
    • a-methyl-naphthalene
    • alphamethylnaphthalene
    • Naphthalene, 1methyl
    • Naphthalene, alphamethyl
    • Naphthalene, alpha-methyl
    • bmse000531
    • 1-Methylnaphthalene, 95%
    • 1-Methylnaphthalene, 96%
    • MLS001050152
    • BIDD:ER0662
    • 1-Methylnaphthalene, >=95%
    • WLN: L66J B1
    • FEMA 3193
    • DTXSID10225161
    • NSC3574
    • Tox21_201768
    • Tox21_300339
    • BDBM50159279
    • STL283953
    • AKOS000120012
    • MSK000683-100T
    • NCGC00091700-01
    • NCGC00091700-02
    • NCGC00091700-03
    • NCGC00254488-01
    • NCGC00259317-01
    • AS-88435
    • PD124014
    • SMR001216533
    • DB-049234
    • DB-078596
    • M0371
    • NS00002590
    • EN300-19783
    • 1-Methylnaphthalene 10 microg/mL in Cyclohexane
    • 1-Methylnaphthalene 10 microg/mL in Acetonitrile
    • A843450
    • Q161656
    • 1-Methylnaphthalene Solution in Toluene, 100ug/mL
    • Z104475342
    • Flavor and Extract Manufacturers' Association Number 3193
    • 1-Methylnaphthalene, TraceCERT(R), certified reference material
    • 201-966-8
1 4

IFRA Standard 51

Recommendation
No restriction
Maximum acceptable concentrations in the finished product (%)
Category 1
Products applied to the lips
 No restriction Category 7A
Rinse-off products applied to the hair with some hand contact
 No restriction
Category 2
Products applied to the axillae
 No restriction Category 7B
Leave-on products applied to the hair with some hand contact
 No restriction
Category 3
Products applied to the face/body using fingertips
 No restriction Category 8
Products with significant anogenital exposure
 No restriction
Category 4
Products related to fine fragrance
 No restriction Category 9
Products with body and hand exposure, primarily rinse off
 No restriction
Category 5A
Body lotion products applied to the body using the hands (palms), primarily leave on
 No restriction Category 10A
Household care products with mostly hand contact
 No restriction
Category 5B
Face moisturizer products applied to the face using the hands (palms), primarily leave on
 No restriction Category 10B
Household care products with mostly hand contact, including aerosol/spray products (with potential leave-on skin contact)
 No restriction
Category 5C
Hand cream products applied to the hands using the hands (palms), primarily leave on
 No restriction Category 11A
Products with intended skin contact but minimal transfer of fragrance to skin from inert substrate without UV exposure
 No restriction
Category 5D
Baby Creams, baby Oils and baby talc
 No restriction Category 11B
Products with intended skin contact but minimal transfer of fragrance to skin from inert substrate with potential UV exposure
 No restriction
Category 6
Products with oral and lip exposure
 No restriction Category 12
Products not intended for direct skin contact, minimal or insignificant transfer to skin
 No restriction

Botanical

Name CAS Botanical Proportion
Coleonema pulchellum Coleonema pulchellum Williams (C. pulchrum Hook.), fam. Rutaceae 0.01%
Santolina chamaecyparisus (Egypt) 84961-58-0 Santolina chamaecyparisus L., fam. Asteraceae (Compositae) 0.06%
Rhus coriaria Rhus coriaria L., fam. Anarcadiaceae 0.1%
Helichrysum stoechas (France) 8023-85-8 Helichrysum stoechas L., fam. Asteraceae (Compositae) 0.01%