Sodium Lauryl Sulfate

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  • Identifiers

    CAS number
    151-21-3

    Molecular formula
    C12H25NaO4S

    SMILES
    CCCCCCCCCCCCOS(=O)(=O)[O-].[Na+]

    Safety labels

    Flammable
    Flammable

    Corrosive
    Corrosive

    Irritant
    Irritant

  • Odor profile

    Fragrance
    Odorless 55.81%
    Fatty 28.6%
    Waxy 24.86%
    Fresh 23.68%
    Savory 21.65%
    Citrus 20.34%
    Oily 20.24%
    Meaty 18.08%
    Milky 17.3%
    Clean 15.99%

     

    Flavor
    Bland 26.8%
    Bitter 24.33%
    Mild 23.96%
    Odorless 21.99%
    Waxy 21.49%
    Slightly waxy 20.46%
    Fatty 19.7%
    Delicate 19.55%
    Bay oil 19.48%
    Faint 19.47%

     

    Odor impact est.
    Medium

  • Properties

    pKa est.
    6.53 (neutral)

    Molecular weight
    288.38 g/mol

    Melting point expt.

    • 399 to 405 °F (NTP, 1992)
    • 205.5 °C
    • 204 °C

    Flash point

    • 153.33 ˚C est.

    Solubility expt.

    • less than 1 mg/mL at 66 °F (NTP, 1992)
    • 100000 mg/L
    • 1 g dissolves in 10 mL water, giving an opalescent solution
    • In water, 1.00X10+5 mg/L (temp not specified)
    • Solubility in water, g/100ml at 20 °C: 15 (moderate)

  • Synonyms

    • Sodium dodecyl sulfate
    • 151-21-3
    • SODIUM LAURYL SULFATE
    • Sodium dodecylsulfate
    • Sodium lauryl sulphate
    • Sodium dodecyl sulphate
    • Dodecyl sodium sulfate
    • Anticerumen
    • Duponal
    • Gardinol
    • Stepanol methyl
    • Neutrazyme
    • Stepanol waq
    • Irium
    • Sodium n-dodecyl sulfate
    • Perlandrol L
    • Perlankrol L
    • Standapol wa-ac
    • Stepanol me dry
    • Sintapon L
    • Finasol osr2
    • Standapol WAQ
    • Stepanol WA
    • Duponol QC
    • Incronol SLS
    • Maprobix NEU
    • Melanol CL
    • Dupanol WAQ
    • Duponol WA dry
    • Hexamol SLS
    • Duponol WAQE
    • Natriumlaurylsulfat
    • Sulfuric acid monododecyl ester sodium salt
    • Dodecyl sulfate sodium salt
    • Sipex SP
    • Sipex UB
    • Stepanol WA Paste
    • Dodecyl sulfate, sodium salt
    • Avirol 118 conc
    • Duponol
    • Dreft
    • Lauyl sodium sulfate
    • Stepanol T 28
    • Aquarex methyl
    • Duponol methyl
    • Empicol LX 28
    • Melanol CL 30
    • Sodium monododecyl sulfate
    • Solsol needles
    • Steinapol NLS 90
    • Duponol waqa
    • Jordanol SL-300
    • Richonol af
    • Standapol waq special
    • Standapol was 100
    • Stepanol WA-100
    • Duponol qx
    • Finasol osr(sub 2)
    • Perklankrol ESD 60
    • sodium;dodecyl sulfate
    • Standapol 112 conc
    • Stepanol ME Dry AW
    • Dodecyl sulfate sodium
    • Duponol Me
    • Monagen Y 100
    • Richonol A
    • Richonol C
    • Sipex sb
    • Sipex sd
    • Caswell No. 779
    • Duponol C
    • Maprofix LK
    • Stepanol ME
    • Akyposal SDS
    • Aquarex ME
    • Carsonol SLS
    • Duponol WA
    • Maprofix NEU
    • Maprofix WAC
    • Stepanol methyl dry aw
    • Berol 452
    • Duponol WAQ
    • Empicol LPZ
    • Natrium laurylsulfuricum
    • Conco sulfate WA
    • Conco sulfate WN
    • Duponal WAQE
    • Duponol WAQM
    • EMAL O
    • Orvus WA Paste
    • Sterling wa paste
    • Nikkol SLS
    • Detergent 66
    • Sipex OP
    • Sipon LS
    • Sipon LS 100
    • Sipon PD
    • Sipon WD
    • Maprofix WAC-LA
    • Montopol La Paste
    • Sipon LSB
    • Cycloryl 21
    • Cycloryl 31
    • Sodium monolauryl sulfate
    • Conco Sulfate WAG
    • Conco Sulfate WAN
    • Conco Sulfate WAS
    • Quolac EX-UB
    • Sodium laurilsulfate
    • Monododecyl sodium sulfate
    • Odoripon Al 95
    • Sodiumlauryl ether sulfate
    • Cycloryl 580
    • Cycloryl 585N
    • Lauryl sulfate sodium salt
    • Laurylsiran sodny [Czech]
    • Maprofix 563
    • Sinnopon LS 95
    • Empicol LS 30
    • Rewopol NLS 30
    • Stepanol wac
    • Lauryl sodium sulfate
    • Sinnopon LS 100
    • Carsonol SLS Special
    • Dehydag sulfate GL emulsion
    • Lauryl sulfate, sodium salt
    • Avirol 101
    • Dehydrag sulfate gl emulsion

  • Applications

    Sodium Lauryl Sulfate (CAS 151-21-3) is a common anionic surfactant used as a foaming agent, emulsifier and wetting agent across many formulations. In cosmetics and personal care, it is commonly used in shampoos, body washes and toothpaste to generate foam and stabilize emulsions. In household cleaning products such as dishwashing liquids and laundry detergents, it provides cleaning performance and foaming. In industrial manufacturing, it acts as a surfactant, emulsifier and wetting agent in metal cleaning/degreasing formulations and in polymer processing. In coatings, inks and paints it improves wetting, dispersion and leveling of pigments. In pharmaceuticals it serves as an excipient and solubilizer for poorly soluble drugs. In agricultural formulations it can function as an adjuvant to improve spreading and compatibility of pesticide products.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 59.45
    methanol 51.09
    isopropanol 54.4
    water 0.01
    ethyl acetate 125.76
    n-propanol 50.28
    acetone 219.27
    n-butanol 44.62
    acetonitrile 74.06
    DMF 546.86
    toluene 96.28
    isobutanol 38.03
    1,4-dioxane 171.67
    methyl acetate 107.36
    THF 497.24
    2-butanone 189.36
    n-pentanol 43.86
    sec-butanol 56.15
    n-hexane 5.22
    ethylene glycol 6.68
    NMP 819.91
    cyclohexane 18.15
    DMSO 540.55
    n-butyl acetate 130.49
    n-octanol 37.22
    chloroform 318.3
    n-propyl acetate 120.95
    acetic acid 68.2
    dichloromethane 346.13
    cyclohexanone 462.83
    propylene glycol 23.23
    isopropyl acetate 115.08
    DMAc 550.67
    2-ethoxyethanol 105.05
    isopentanol 47.79
    n-heptane 4.08
    ethyl formate 66.92
    1,2-dichloroethane 307.86
    n-hexanol 42.82
    2-methoxyethanol 153.36
    isobutyl acetate 75.06
    tetrachloromethane 29.75
    n-pentyl acetate 129.31
    transcutol 456.65
    n-heptanol 28.28
    ethylbenzene 49.76
    MIBK 125.95
    2-propoxyethanol 120.8
    tert-butanol 80.61
    MTBE 103.08
    2-butoxyethanol 86.84
    propionic acid 61.24
    o-xylene 72.47
    formic acid 18.02
    diethyl ether 76.08
    m-xylene 70.11
    p-xylene 65.29
    chlorobenzene 157.45
    dimethyl carbonate 51.38
    n-octane 2.73
    formamide 63.44
    cyclopentanone 610.39
    2-pentanone 177.78
    anisole 137.3
    cyclopentyl methyl ether 199.55
    gamma-butyrolactone 475.63
    1-methoxy-2-propanol 150.21
    pyridine 294.93
    3-pentanone 135.53
    furfural 434.54
    n-dodecane 2.43
    diethylene glycol 66.5
    diisopropyl ether 32.87
    tert-amyl alcohol 84.57
    acetylacetone 300.74
    n-hexadecane 3.03
    acetophenone 191.52
    methyl propionate 118.32
    isopentyl acetate 132.65
    trichloroethylene 640.25
    n-nonanol 36.58
    cyclohexanol 80.05
    benzyl alcohol 92.33
    2-ethylhexanol 35.09
    isooctanol 27.17
    dipropyl ether 47.93
    1,2-dichlorobenzene 188.2
    ethyl lactate 58.85
    propylene carbonate 222.02
    n-methylformamide 125.27
    2-pentanol 38.33
    n-pentane 4.82
    1-propoxy-2-propanol 107.82
    1-methoxy-2-propyl acetate 169.15
    2-(2-methoxypropoxy) propanol 130.86
    mesitylene 46.16
    ε-caprolactone 329.93
    p-cymene 35.63
    epichlorohydrin 514.22
    1,1,1-trichloroethane 214.2
    2-aminoethanol 26.98
    morpholine-4-carbaldehyde 505.22
    sulfolane 871.2
    2,2,4-trimethylpentane 4.72
    2-methyltetrahydrofuran 298.82
    n-hexyl acetate 158.36
    isooctane 3.34
    2-(2-butoxyethoxy)ethanol 166.6
    sec-butyl acetate 95.79
    tert-butyl acetate 178.86
    decalin 10.91
    glycerin 34.56
    diglyme 309.5
    acrylic acid 55.69
    isopropyl myristate 54.43
    n-butyric acid 104.77
    acetyl acetate 101.85
    di(2-ethylhexyl) phthalate 60.09
    ethyl propionate 99.26
    nitromethane 238.81
    1,2-diethoxyethane 138.12
    benzonitrile 150.46
    trioctyl phosphate 37.61
    1-bromopropane 124.67
    gamma-valerolactone 688.9
    n-decanol 25.12
    triethyl phosphate 55.12
    4-methyl-2-pentanol 27.15
    propionitrile 64.06
    vinylene carbonate 174.95
    1,1,2-trichlorotrifluoroethane 298.9
    DMS 122.81
    cumene 33.11
    2-octanol 27.12
    2-hexanone 146.09
    octyl acetate 68.48
    limonene 57.68
    1,2-dimethoxyethane 214.91
    ethyl orthosilicate 50.67
    tributyl phosphate 51.38
    diacetone alcohol 201.16
    N,N-dimethylaniline 102.92
    acrylonitrile 96.31
    aniline 101.62
    1,3-propanediol 44.31
    bromobenzene 194.66
    dibromomethane 219.14
    1,1,2,2-tetrachloroethane 525.37
    2-methyl-cyclohexyl acetate 119.46
    tetrabutyl urea 87.04
    diisobutyl methanol 28.25
    2-phenylethanol 86.44
    styrene 70.93
    dioctyl adipate 98.51
    dimethyl sulfate 157.18
    ethyl butyrate 96.49
    methyl lactate 73.9
    butyl lactate 98.84
    diethyl carbonate 61.02
    propanediol butyl ether 106.32
    triethyl orthoformate 70.17
    p-tert-butyltoluene 37.12
    methyl 4-tert-butylbenzoate 154.91
    morpholine 271.88
    tert-butylamine 45.45
    n-dodecanol 18.35
    dimethoxymethane 166.94
    ethylene carbonate 129.9
    cyrene 170.1
    2-ethoxyethyl acetate 184.2
    2-ethylhexyl acetate 106.79
    1,2,4-trichlorobenzene 244.16
    4-methylpyridine 289.11
    dibutyl ether 55.84
    2,6-dimethyl-4-heptanol 28.25
    DEF 258.12
    dimethyl isosorbide 292.59
    tetrachloroethylene 244.81
    eugenol 135.6
    triacetin 186.86
    span 80 127.85
    1,4-butanediol 19.0
    1,1-dichloroethane 202.65
    2-methyl-1-pentanol 46.44
    methyl formate 72.8
    2-methyl-1-butanol 43.34
    n-decane 4.4
    butyronitrile 78.41
    3,7-dimethyl-1-octanol 44.26
    1-chlorooctane 31.52
    1-chlorotetradecane 11.82
    n-nonane 3.87
    undecane 3.12
    tert-butylcyclohexane 7.84
    cyclooctane 5.79
    cyclopentanol 105.03
    tetrahydropyran 195.96
    tert-amyl methyl ether 97.63
    2,5,8-trioxanonane 234.57
    1-hexene 28.54
    2-isopropoxyethanol 81.61
    2,2,2-trifluoroethanol 28.61
    methyl butyrate 144.83

    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