1-Methoxy-2-propanol

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  • Identifiers

    CAS number
    107-98-2

    Molecular formula
    C4H10O2

    SMILES
    CC(COC)O

    Safety labels

    Flammable
    Flammable

    Irritant
    Irritant

  • Odor profile

    Fragrance
    Sweet 63.69%
    Ethereal 63.0%
    Alcoholic 56.26%
    Solvent 43.43%
    Fermented 37.46%
    Fruity 35.18%
    Buttery 32.55%
    Musty 30.27%
    Oily 30.21%
    Caramellic 29.84%

     

    Flavor
    Alcoholic 47.95%
    Bitter 44.12%
    Musty 34.85%
    Odorless 31.19%
    Oily 28.61%
    Fermented 26.52%
    Alcohol 26.47%
    Fusel 26.33%
    Ether 26.3%
    Fruit 26.3%

     

    Odor impact est.
    Medium

    Odor threshold

    • Odor Threshold Low: 10.0 [mmHg]. Odor Threshold High: 100.0 [mmHg]. Odor threshold from CHEMINFO, low (detection), high (objectionable)
    • The odor of /propylene glycol monomethyl ether/ could be detected at 10 ppm.

  • Properties

    XLogP3-AA
    -0.2

    pKa est.
    7.37 (neutral)

    Molecular weight
    90.12 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra fast

    Melting point expt.

    • -139 °F (NTP, 1992)
    • -95 °C
    • -96 °C
    • -139 °F (sets to glass)
    • -139 °F (Sets to glass)

    Boiling point

    • 248 °F at 760 mmHg (NTP, 1992)
    • 120 °C
    • 248 °F

    Flash point

    • 35.9 ˚C est.
    • 97 °F (NTP, 1992)
    • 32 °C
    • 90 °F (32 °C) (closed cup)
    • 97 °F (Open cup)
    • 38 °C
    • 97 °F

    Solubility expt.

    • greater than or equal to 100 mg/mL at 66 °F (NTP, 1992)
    • In water, 100 mg/mL at 19 °C
    • Miscible with water
    • Miscible in all proportions with organic solvents
    • Solubility in water: very good
    • Miscible

  • Synonyms

    • 1-Methoxy-2-propanol
    • 107-98-2
    • 1-Methoxypropan-2-ol
    • Methoxyisopropanol
    • PGME
    • 2-Propanol, 1-methoxy-
    • Propylene glycol monomethyl ether
    • Closol
    • 1-Methoxy-2-hydroxypropane
    • Dowtherm 209
    • PROPYLENE GLYCOL METHYL ETHER
    • Propasol solvent M
    • Dowanol 33B
    • 2-Methoxy-1-methylethanol
    • Propylene glycol 1-methyl ether
    • HSDB 1016
    • Ucar solvent lm
    • Solvent PM
    • Icinol PM
    • NSC 2409
    • methoxy isopropanol
    • EINECS 203-539-1
    • UNII-74Z7JO8V3U
    • UN3092
    • Dowanol-33B
    • BRN 1731270
    • DTXSID8024284
    • AI3-15573
    • 1-methoxy-propan-2-ol
    • NSC-2409
    • Propan-1-methoxy-2-ol
    • Propan-2-ol, 1-methoxy-
    • .alpha.-Propylene glycol monomethyl ether
    • Propylenglykol-monomethylaether
    • 74Z7JO8V3U
    • DTXCID804284
    • Propyleneglycol monomethyl ether
    • Methoxypropanol, .alpha. isomer
    • EC 203-539-1
    • 3-01-00-02146 (Beilstein Handbook Reference)
    • Methyl proxitol
    • 1-METHOXY-2-HYDROXYPROPANE [HSDB]
    • 2-Propanol, methoxy-
    • Ucar Solvent LM (Obs.)
    • CAS-107-98-2
    • MFCD00004537
    • propyleneglycol monomethylether
    • Glycol ether pm
    • 1-methoxypropanol
    • PolySolve MPM
    • 1Methoxy2propanol
    • Dowtherm209
    • Methoxy-2-propanol
    • 2Propanol, 1methoxy
    • 2Methoxy1methylethanol
    • 3-methoxy-2-propanol
    • 1Methoxy2hydroxypropane
    • Dowanol pm glycol ether
    • 3-methoxy-propan-2-ol
    • 1-methoxy-propane-2-ol
    • rac-1-methoxy-2-propanol
    • 1,2-PROPYLENE GLYCOL 1-MONOMETHYL ETHER
    • 2-methoxy-1-methyl ethanol
    • UCAR SOLVENT (Obs.)
    • Methoxypropanol, alpha isomer
    • propylene glycol monomethylether
    • 1-Methoxy-2-propanol, 98%
    • (+/-)-1-methoxy-2-propanol
    • CHEMBL3186306
    • METHOXYISOPROPANOL [INCI]
    • DTXSID10872972
    • NSC2409
    • WLN: QY1 & 1O1
    • propylene glycol mono methyl ether
    • (+/-)2-methoxy-1-methylethanol
    • Propylene Glycol 1-Monomethyl Ether
    • Tox21_201803
    • Tox21_303269
    • 1-Methoxy-2-propanol, >=99.5%
    • AKOS009158246
    • FM75064
    • SB44649
    • SB44662
    • NCGC00249123-01
    • NCGC00256978-01
    • NCGC00259352-01
    • SY012761
    • 1-Methoxy-2-propanol, analytical standard
    • Propylene glycol monomethyl ether (ACGIH)
    • DB-016688
    • M0126
    • NS00003122
    • EN300-73396
    • E72455
    • Q1884806
    • 1-Methoxy-2-propanol [UN3092] [Flammable liquid]
    • Z825742124

  • Applications

    1-Methoxy-2-propanol (CAS 107-98-2) is a versatile solvent and processing aid used across several industries. In coatings and inks, it acts as a compatible carrier and co-solvent for paints, varnishes, and adhesive formulations. It is employed in industrial cleaning and degreasing formulations to dissolve oils, resins, and related residues. In electronics and photonics, it serves as a solvent for cleaning substrates and process-specific coatings. In polymer processing, it can function as a solvent or reactive diluent for certain resins. It may also appear as a formulation solvent in cosmetics and personal care products for fragrance oils and other actives. Use is subject to local regulations and formulation limits.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 2819.77
    methanol 5138.75
    isopropanol 1375.83
    water 748.93
    ethyl acetate 247.78
    n-propanol 1600.95
    acetone 509.51
    n-butanol 1112.22
    acetonitrile 555.42
    DMF 875.02
    toluene 32.86
    isobutanol 747.74
    1,4-dioxane 731.03
    methyl acetate 356.51
    THF 719.97
    2-butanone 304.14
    n-pentanol 462.07
    sec-butanol 890.43
    n-hexane 34.65
    ethylene glycol 1851.78
    NMP 586.26
    cyclohexane 62.15
    DMSO 733.38
    n-butyl acetate 198.2
    n-octanol 172.81
    chloroform 443.81
    n-propyl acetate 129.96
    acetic acid 4138.76
    dichloromethane 407.8
    cyclohexanone 369.03
    propylene glycol 1299.31
    isopropyl acetate 94.0
    DMAc 507.51
    2-ethoxyethanol 844.88
    isopentanol 451.86
    n-heptane 51.9
    ethyl formate 338.04
    1,2-dichloroethane 201.29
    n-hexanol 505.19
    2-methoxyethanol 1930.6
    isobutyl acetate 73.19
    tetrachloromethane 110.89
    n-pentyl acetate 95.98
    transcutol 1068.31
    n-heptanol 176.87
    ethylbenzene 18.7
    MIBK 79.61
    2-propoxyethanol 758.27
    tert-butanol 932.16
    MTBE 263.26
    2-butoxyethanol 335.17
    propionic acid 1197.58
    o-xylene 30.77
    formic acid 3498.3
    diethyl ether 304.42
    m-xylene 25.98
    p-xylene 26.72
    chlorobenzene 63.43
    dimethyl carbonate 67.35
    n-octane 13.74
    formamide 1595.55
    cyclopentanone 386.88
    2-pentanone 194.61
    anisole 81.33
    cyclopentyl methyl ether 271.42
    gamma-butyrolactone 469.97
    1-methoxy-2-propanol 790.25
    pyridine 263.31
    3-pentanone 134.92
    furfural 445.08
    n-dodecane 10.22
    diethylene glycol 973.39
    diisopropyl ether 45.95
    tert-amyl alcohol 638.8
    acetylacetone 138.14
    n-hexadecane 10.36
    acetophenone 78.16
    methyl propionate 213.67
    isopentyl acetate 127.95
    trichloroethylene 334.23
    n-nonanol 136.13
    cyclohexanol 593.87
    benzyl alcohol 146.14
    2-ethylhexanol 201.99
    isooctanol 111.45
    dipropyl ether 176.2
    1,2-dichlorobenzene 60.42
    ethyl lactate 116.75
    propylene carbonate 230.11
    n-methylformamide 858.76
    2-pentanol 433.32
    n-pentane 61.42
    1-propoxy-2-propanol 469.5
    1-methoxy-2-propyl acetate 159.9
    2-(2-methoxypropoxy) propanol 228.97
    mesitylene 18.28
    ε-caprolactone 334.87
    p-cymene 35.51
    epichlorohydrin 388.36
    1,1,1-trichloroethane 137.15
    2-aminoethanol 2024.38
    morpholine-4-carbaldehyde 703.17
    sulfolane 449.91
    2,2,4-trimethylpentane 25.03
    2-methyltetrahydrofuran 502.44
    n-hexyl acetate 149.26
    isooctane 13.35
    2-(2-butoxyethoxy)ethanol 350.42
    sec-butyl acetate 65.53
    tert-butyl acetate 96.43
    decalin 15.73
    glycerin 1587.47
    diglyme 518.79
    acrylic acid 1054.5
    isopropyl myristate 51.98
    n-butyric acid 988.46
    acetyl acetate 136.75
    di(2-ethylhexyl) phthalate 74.03
    ethyl propionate 90.16
    nitromethane 1442.82
    1,2-diethoxyethane 207.37
    benzonitrile 112.22
    trioctyl phosphate 60.2
    1-bromopropane 135.92
    gamma-valerolactone 574.66
    n-decanol 93.6
    triethyl phosphate 62.15
    4-methyl-2-pentanol 138.06
    propionitrile 337.1
    vinylene carbonate 220.69
    1,1,2-trichlorotrifluoroethane 618.02
    DMS 93.21
    cumene 18.57
    2-octanol 97.15
    2-hexanone 122.95
    octyl acetate 81.21
    limonene 76.17
    1,2-dimethoxyethane 640.52
    ethyl orthosilicate 68.43
    tributyl phosphate 68.45
    diacetone alcohol 206.62
    N,N-dimethylaniline 60.09
    acrylonitrile 351.73
    aniline 172.1
    1,3-propanediol 1893.32
    bromobenzene 39.92
    dibromomethane 249.83
    1,1,2,2-tetrachloroethane 256.92
    2-methyl-cyclohexyl acetate 103.88
    tetrabutyl urea 86.37
    diisobutyl methanol 82.05
    2-phenylethanol 149.18
    styrene 24.89
    dioctyl adipate 92.28
    dimethyl sulfate 98.82
    ethyl butyrate 126.78
    methyl lactate 202.82
    butyl lactate 120.79
    diethyl carbonate 74.92
    propanediol butyl ether 313.12
    triethyl orthoformate 102.53
    p-tert-butyltoluene 35.87
    methyl 4-tert-butylbenzoate 106.09
    morpholine 1035.66
    tert-butylamine 494.02
    n-dodecanol 70.03
    dimethoxymethane 353.06
    ethylene carbonate 191.53
    cyrene 197.64
    2-ethoxyethyl acetate 131.38
    2-ethylhexyl acetate 102.76
    1,2,4-trichlorobenzene 84.23
    4-methylpyridine 180.12
    dibutyl ether 103.22
    2,6-dimethyl-4-heptanol 82.05
    DEF 301.17
    dimethyl isosorbide 280.84
    tetrachloroethylene 252.77
    eugenol 140.61
    triacetin 138.93
    span 80 244.43
    1,4-butanediol 687.47
    1,1-dichloroethane 181.25
    2-methyl-1-pentanol 238.58
    methyl formate 529.35
    2-methyl-1-butanol 521.56
    n-decane 17.51
    butyronitrile 342.61
    3,7-dimethyl-1-octanol 134.75
    1-chlorooctane 55.74
    1-chlorotetradecane 21.92
    n-nonane 18.39
    undecane 12.44
    tert-butylcyclohexane 18.81
    cyclooctane 16.58
    cyclopentanol 689.92
    tetrahydropyran 565.03
    tert-amyl methyl ether 192.46
    2,5,8-trioxanonane 368.35
    1-hexene 81.57
    2-isopropoxyethanol 397.98
    2,2,2-trifluoroethanol 1074.77
    methyl butyrate 145.42

    Scent© AI

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