Silicon carbide

Overview IFRA Request a quote

  • Identifiers

    CAS number
    409-21-2

    Molecular formula
    CSi

    SMILES
    [C-]#[Si+]

    Safety labels

    Health Hazard
    Health

  • Odor profile

    Fragrance
    Odorless 55.92%
    Pungent 21.26%
    Fishy 15.9%
    Bitter 14.87%
    Sharp 13.79%
    Sulfurous 13.79%
    Burnt 13.4%
    Garlic 11.45%
    Animal 11.45%
    Alliaceous 11.08%

     

    Flavor
    Bitter 74.08%
    Odorless 33.06%
    Rotten 22.34%
    Formyl 21.07%
    Sulfur 19.6%
    Decomposing cabbage 19.0%
    Nitrile 18.97%
    Mousy 18.64%
    Shrimp 17.56%
    Indole 17.1%

     

  • Properties

    pKa est.
    -4.26 (strong acid)

    Molecular weight
    40.096 g/mol

    Melting point expt.

    • 4892 °F (Sublimes) (NIOSH, 2024)
    • 2600 °C
    • 4892 °F (sublimes)
    • 4892 °F (Sublimes)

    Boiling point

    • Sublimes (NIOSH, 2024)
    • sublimes
    • Sublimes

    Flash point

    • -65.05 ˚C est.

    Solubility expt.

    • Insoluble (NIOSH, 2024)
    • INSOL IN COLD WATER, HOT WATER, & ACID; SOL IN FUSED POTASSIUM HYDROXIDE
    • INSOL IN ALCOHOL; SOL IN MOLTEN IRON
    • Solubility in water: none
    • Insoluble

  • Synonyms

    • SILICON CARBIDE
    • 409-21-2
    • Carborundum
    • Silicon monocarbide
    • Crystar
    • Silicon carbide (SiC)
    • Carborundeum
    • Betarundum
    • Carbolon
    • Silundum
    • Tokawhisker
    • Nicalon
    • Carbon silicide
    • Green densic
    • Betarundum UF
    • Carbofrax M
    • Annanox CK
    • Betarundum ST-S
    • Crystolon 37
    • Crystolon 39
    • Betarundum ultrafine
    • Hitaceram SC 101
    • SC 9 (Carbide)
    • Densic C 500
    • Green densic GC 800
    • KZ 3M
    • KZ 5M
    • KZ 7M
    • SCW 1
    • DU-A 3C
    • DU-A 1
    • DU-A 2
    • DU-A 3
    • DU-A 4
    • SD-GP 6000
    • SD-GP 8000
    • UF 15
    • SC 201
    • YE 5626
    • DTXSID5052751
    • GC 10000
    • WXQ6E537EW
    • CHEBI:29390
    • carbonite
    • CRYSTOLON
    • RefChem:183000
    • ULTRAFINE (CARBIDE)
    • UF 10 (CARBIDE)
    • DTXCID601506403
    • 206-991-8
    • methanidylidynesilanylium
    • Silicon carbide whiskers
    • MFCD00049531
    • Silicon carbide, beta-phase
    • Silicon Carbide Micron Powder
    • CCRIS 7813
    • HSDB 681
    • SC 9
    • UA 1
    • UA 2
    • UA 3
    • UA 4
    • Silicon carbide powder
    • EINECS 206-991-8
    • UNII-WXQ6E537EW
    • carbidosilicon
    • Siliciumcarbid
    • Siliziumkarbid
    • Carborundum, CP
    • Silicon carbide beta
    • Siliconcarbide1-3um
    • Silicon(IV) carbide
    • Silicon carbide Alpha
    • Silaniumylidynemethanide
    • Silicon carbide 1-3um
    • Silicon Carbide Nanowire
    • silicon carbide whis-kers
    • [SiC]
    • EC 206-991-8
    • Nano Silicon Carbide Powder
    • Silicon Carbide Fine Powder
    • beta-Silicon carbide 0.5um
    • Silicon Carbide Micronwhisker
    • Silicon carbide, -100 mesh
    • Silicon carbide, -325 mesh
    • SCHEMBL29350951
    • Silicon Carbide Submicron Powder
    • Magnesium Sulfide (MgS) Sputtering Targets
    • Silicon carbide nanopowder (beta) (40 nm)
    • Silicon carbide (beta), SiC, 97.5% Nano
    • Silicon carbide, 200-450 mesh particle size
    • Beta-Silicon Carbide SiC GRADE B-hp (H?gan?s)
    • Q412356
    • Beta-Silicon Carbide SiC GRADE BF 12 (H?gan?s)
    • Beta-Silicon Carbide SiC GRADE BF 17 (H?gan?s)
    • Silicon carbide, nanopowder, <100 nm particle size
    • Silicon carbide, -400 mesh particle size, >=97.5%
    • StarCeram? S, Silicon Carbide, (rtp), Grade CQ (Kyocera)
    • StarCeram? S, Silicon Carbide, (rtp), Grade HQ (Kyocera)
    • StarCeram? S, Silicon Carbide, (rtp), Grade RQ (Kyocera)
    • StarCeram? S, Silicon Carbide, (rtp), Grade SQ (Kyocera)
    • StarCeram? S UF, Silicon Carbide, SiC Grade UF-05 (Kyocera)
    • StarCeram? S UF, Silicon Carbide, SiC Grade UF-10 (Kyocera)
    • StarCeram? S UF, Silicon Carbide, SiC Grade UF-15 (Kyocera)
    • StarCeram? S UF, Silicon Carbide, SiC Grade UF-25 (Kyocera)
    • StarCeram? S, Silicon Carbide, (rtp), Grade HQ-F (Kyocera)
    • Silicon Carbide, F 100, green, main particle size 150-106 micron
    • Silicon Carbide, F 1000, green, main particle size 16-0.2 micron
    • Silicon Carbide, F 150, green, main particle siZe 106-63 micron
    • Silicon Carbide, F 280, green, main particle size 89-23 micron
    • Silicon Carbide, F 360, green, main particle size 61-12 micron
    • Silicon Carbide, F 40, green, main particle size 500-355 micron
    • Silicon carbide, F 400, green, main particle size 49-8 micron
    • Silicon Carbide, F 500, green, main particle siZe 38-4 micron
    • Silicon Carbide, F 60, green, main particle size 425-180 micron
    • Silicon Carbide, F 600, green, main particle size 29-2 micron
    • Silicon Carbide, F 800, green, main particle size 22-1.3 micron
    • Silicon Carbide, F 1200, green, main particle size 11,4-0,2 micron
    • Silicon carbide, nanofiber, D <2.5 mum, L/D >= 20, 98% trace metals basis
    • 409-21-2

  • Applications

    Silicon carbide (CAS 409-21-2) is a high-hardness, high-temperature ceramic commonly used as an abrasive grain in grinding wheels, sanding papers, and polishing pastes; as a refractory/ceramic material for crucibles, kiln furniture, and other high-temperature components; as a substrate and wafer material for power electronics and high-temperature semiconductor devices; as a reinforcing filler in polymers and ceramic matrix composites to improve wear resistance and mechanical strength; and in coatings and inks as an abrasive filler or protective coating material in industrial finishes.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 385.76
    methanol 440.86
    isopropanol 250.25
    water 9.61
    ethyl acetate 180.58
    n-propanol 268.29
    acetone 331.86
    n-butanol 233.06
    acetonitrile 225.04
    DMF 535.93
    toluene 104.43
    isobutanol 166.48
    1,4-dioxane 373.63
    methyl acetate 192.7
    THF 422.78
    2-butanone 207.96
    n-pentanol 146.42
    sec-butanol 203.16
    n-hexane 57.29
    ethylene glycol 154.45
    NMP 420.57
    cyclohexane 81.68
    DMSO 432.66
    n-butyl acetate 141.34
    n-octanol 103.44
    chloroform 369.94
    n-propyl acetate 123.56
    acetic acid 332.18
    dichloromethane 301.34
    cyclohexanone 264.01
    propylene glycol 125.32
    isopropyl acetate 98.09
    DMAc 296.88
    2-ethoxyethanol 181.6
    isopentanol 141.68
    n-heptane 63.84
    ethyl formate 143.37
    1,2-dichloroethane 201.38
    n-hexanol 176.31
    2-methoxyethanol 348.1
    isobutyl acetate 74.82
    tetrachloromethane 116.29
    n-pentyl acetate 105.71
    transcutol 370.97
    n-heptanol 110.74
    ethylbenzene 45.31
    MIBK 95.7
    2-propoxyethanol 226.48
    tert-butanol 229.24
    MTBE 155.0
    2-butoxyethanol 156.72
    propionic acid 246.71
    o-xylene 62.16
    formic acid 156.79
    diethyl ether 237.92
    m-xylene 64.25
    p-xylene 57.06
    chlorobenzene 117.25
    dimethyl carbonate 97.05
    n-octane 26.38
    formamide 211.88
    cyclopentanone 321.92
    2-pentanone 186.02
    anisole 98.79
    cyclopentyl methyl ether 207.02
    gamma-butyrolactone 311.3
    1-methoxy-2-propanol 236.62
    pyridine 296.07
    3-pentanone 141.57
    furfural 271.7
    n-dodecane 19.81
    diethylene glycol 208.39
    diisopropyl ether 69.96
    tert-amyl alcohol 177.31
    acetylacetone 170.5
    n-hexadecane 21.15
    acetophenone 85.31
    methyl propionate 165.11
    isopentyl acetate 97.97
    trichloroethylene 305.28
    n-nonanol 86.32
    cyclohexanol 188.72
    benzyl alcohol 88.75
    2-ethylhexanol 99.51
    isooctanol 80.79
    dipropyl ether 137.2
    1,2-dichlorobenzene 94.11
    ethyl lactate 64.26
    propylene carbonate 170.84
    n-methylformamide 282.64
    2-pentanol 158.34
    n-pentane 73.66
    1-propoxy-2-propanol 175.21
    1-methoxy-2-propyl acetate 110.95
    2-(2-methoxypropoxy) propanol 102.25
    mesitylene 42.86
    ε-caprolactone 212.56
    p-cymene 42.21
    epichlorohydrin 261.12
    1,1,1-trichloroethane 186.82
    2-aminoethanol 206.39
    morpholine-4-carbaldehyde 380.79
    sulfolane 347.5
    2,2,4-trimethylpentane 27.54
    2-methyltetrahydrofuran 291.35
    n-hexyl acetate 119.99
    isooctane 23.23
    2-(2-butoxyethoxy)ethanol 158.05
    sec-butyl acetate 70.94
    tert-butyl acetate 101.01
    decalin 26.52
    glycerin 173.25
    diglyme 274.46
    acrylic acid 213.55
    isopropyl myristate 52.46
    n-butyric acid 244.16
    acetyl acetate 108.77
    di(2-ethylhexyl) phthalate 47.11
    ethyl propionate 97.82
    nitromethane 348.92
    1,2-diethoxyethane 154.18
    benzonitrile 117.78
    trioctyl phosphate 44.67
    1-bromopropane 161.95
    gamma-valerolactone 325.9
    n-decanol 66.84
    triethyl phosphate 45.36
    4-methyl-2-pentanol 76.58
    propionitrile 174.71
    vinylene carbonate 165.89
    1,1,2-trichlorotrifluoroethane 231.99
    DMS 87.64
    cumene 33.19
    2-octanol 78.0
    2-hexanone 124.09
    octyl acetate 69.38
    limonene 66.98
    1,2-dimethoxyethane 246.72
    ethyl orthosilicate 49.32
    tributyl phosphate 44.73
    diacetone alcohol 132.7
    N,N-dimethylaniline 74.28
    acrylonitrile 205.28
    aniline 133.77
    1,3-propanediol 234.72
    bromobenzene 112.92
    dibromomethane 242.59
    1,1,2,2-tetrachloroethane 242.71
    2-methyl-cyclohexyl acetate 62.7
    tetrabutyl urea 67.59
    diisobutyl methanol 62.35
    2-phenylethanol 99.45
    styrene 64.64
    dioctyl adipate 62.02
    dimethyl sulfate 142.13
    ethyl butyrate 95.75
    methyl lactate 104.79
    butyl lactate 80.48
    diethyl carbonate 58.66
    propanediol butyl ether 132.78
    triethyl orthoformate 70.88
    p-tert-butyltoluene 42.68
    methyl 4-tert-butylbenzoate 83.98
    morpholine 418.76
    tert-butylamine 158.21
    n-dodecanol 54.38
    dimethoxymethane 247.79
    ethylene carbonate 138.18
    cyrene 89.87
    2-ethoxyethyl acetate 116.84
    2-ethylhexyl acetate 90.01
    1,2,4-trichlorobenzene 107.84
    4-methylpyridine 222.13
    dibutyl ether 98.31
    2,6-dimethyl-4-heptanol 62.35
    DEF 243.34
    dimethyl isosorbide 141.93
    tetrachloroethylene 200.71
    eugenol 96.33
    triacetin 94.36
    span 80 112.92
    1,4-butanediol 97.72
    1,1-dichloroethane 202.66
    2-methyl-1-pentanol 105.58
    methyl formate 182.88
    2-methyl-1-butanol 149.64
    n-decane 30.05
    butyronitrile 170.35
    3,7-dimethyl-1-octanol 80.25
    1-chlorooctane 68.79
    1-chlorotetradecane 33.26
    n-nonane 32.55
    undecane 23.52
    tert-butylcyclohexane 27.23
    cyclooctane 30.32
    cyclopentanol 219.56
    tetrahydropyran 326.57
    tert-amyl methyl ether 124.27
    2,5,8-trioxanonane 181.43
    1-hexene 108.89
    2-isopropoxyethanol 123.42
    2,2,2-trifluoroethanol 116.32
    methyl butyrate 128.91

    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