D&C Red No. 34

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  • Identifiers

    CAS number
    6417-83-0

    Molecular formula
    C21H12CaN2O6S

    SMILES
    C1=CC=C2C(=C1)C=CC(=C2S(=O)(=O)[O-])N=NC3=C(C(=CC4=CC=CC=C43)C(=O)O)[O-].[Ca+2]

    Safety labels

  • Odor profile

    Fragrance
    Odorless 67.69%
    Grape 28.55%
    Fruity 26.79%
    Bitter 23.88%
    Cooked 21.98%
    Neroli 17.62%
    Savory 16.81%
    Clean 16.26%
    Burnt 16.19%
    Fatty 16.18%

     

    Flavor
    Bitter 88.71%
    Odorless 38.1%
    Nitrile 21.03%
    Bland 20.08%
    Very strong 19.0%
    Indole 18.79%
    Mild 18.52%
    Bread crust 18.35%
    Taco 18.3%
    Moth ball 18.15%

     

    Odor impact est.
    Low

  • Properties

    pKa est.
    2.93 (strong acid)

    Molecular weight
    460.5 g/mol

    Flash point

    • 278.3 ˚C est.

  • Synonyms

    • 6417-83-0
    • D&C Red No. 34
    • CI 15880
    • BAN556989E
    • Pigment Red 63:1 (Technical Grade)
    • calcium;2-[(3-carboxy-2-oxidonaphthalen-1-yl)diazenyl]naphthalene-1-sulfonate
    • 2-Naphthalenecarboxylic acid, 3-hydroxy-4-(2-(1-sulfo-2-naphthalenyl)diazenyl)-, calcium salt (1:1)
    • D & C Red no. 34
    • CCRIS 7075
    • EINECS 229-142-3
    • UNII-BAN556989E
    • CI 15880:1 (Ca salt)
    • Calcium (e)-3-hydroxy-4-((1-sulfonatonaphthalen-2-yl)diazenyl)-2-naphthoate
    • EC 229-142-3
    • C21H12CaN2O6S
    • DC RED NO. 34
    • SCHEMBL342150
    • AKA220
    • orb2565497
    • orb3025190
    • RED 34
    • SCHEMBL2226213
    • DTXSID4064347
    • SCHEMBL15709867
    • SCHEMBL29391839
    • SCHEMBL29483379
    • GSKZUBJRXCWFFE-XTMYEIJHSA-L
    • Calcium 3-hydroxy-4-((1-sulphonato-2-naphthyl)azo)-2-naphthoate
    • HY-D1164
    • MFCD28989168
    • Pigment Red 63:1, Technical grade
    • AKOS025311141
    • FP39727
    • 2-Naphthalenecarboxylic acid, 3-hydroxy-4-((1-sulfo-2-naphthalenyl)azo)-, calcium salt
    • 2-Naphthalenecarboxylic acid, 3-hydroxy-4-((1-sulfo-2-naphthalenyl)azo)-, calcium salt (1:1)
    • 2-Naphthalenecarboxylic acid, 3-hydroxy-4-((1-sulfo-2-naphthalenyl)azo)-, calcium salt(1:1)
    • 3-Hydroxy-4-((1-sulfo-2-naphthalenyl)azo)-2-naphthalenecarboxylic acid, calcium salt(1:1)
    • CS-0137964
    • NS00082371
    • H10980
    • C.I. NO.15880 (D&C RED NO. 34)
    • Q27274567
    • Calcium 3-hydroxy-4-((1-sulfonatonaphthalen-2-yl)diazenyl)-2-naphthoate
    • Calcium 3-hydroxy-4-[(1-sulfonatonaphthalen-2-yl)diazenyl]naphthalene-2-carboxylate
    • calcium;(4Z)-3-oxo-4-[(1-sulfonato-2-naphthyl)hydrazono]naphthalene-2-carboxylate
    • 2-Naphthalenecarboxylic acid, 3-hydroxy-4-[(1-sulfo-2-naphthalenyl)aZo]-, calcium salt (1:1), techn.
    • 3-HYDROXY-4-((1-SULFO-2-NAPHTHALENYL)AZO)-2-NAPHTHALENECARBOXYLIC ACID, DISODIUM SALT
    • 6417-83-0

  • Applications

    D&C Red No. 34 (CAS 6417-83-0) is primarily used as a cosmetic colorant under regulatory color-additive rules, providing red pigmentation in skin-contact personal care products such as makeup and other cosmetics. It is also encountered as a colorant in pharmaceutical dosage forms and topical preparations, and it can serve as a pigment in coatings, inks, and plastics to impart stable red coloration in consumer products.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 1.94
    methanol 2.04
    isopropanol 1.18
    water 0.0
    ethyl acetate 2.48
    n-propanol 1.86
    acetone 10.47
    n-butanol 1.07
    acetonitrile 2.63
    DMF 34.53
    toluene 1.63
    isobutanol 0.94
    1,4-dioxane 11.03
    methyl acetate 5.06
    THF 43.67
    2-butanone 10.49
    n-pentanol 0.84
    sec-butanol 1.27
    n-hexane 0.03
    ethylene glycol 1.48
    NMP 31.89
    cyclohexane 0.08
    DMSO 31.36
    n-butyl acetate 2.17
    n-octanol 0.5
    chloroform 3.38
    n-propyl acetate 2.06
    acetic acid 4.44
    dichloromethane 4.43
    cyclohexanone 11.46
    propylene glycol 1.64
    isopropyl acetate 1.79
    DMAc 36.13
    2-ethoxyethanol 4.51
    isopentanol 0.75
    n-heptane 0.05
    ethyl formate 2.08
    1,2-dichloroethane 3.89
    n-hexanol 0.73
    2-methoxyethanol 11.93
    isobutyl acetate 1.0
    tetrachloromethane 0.21
    n-pentyl acetate 1.88
    transcutol 8.6
    n-heptanol 0.67
    ethylbenzene 0.49
    MIBK 1.94
    2-propoxyethanol 6.51
    tert-butanol 1.16
    MTBE 1.15
    2-butoxyethanol 3.67
    propionic acid 2.88
    o-xylene 0.74
    formic acid 3.06
    diethyl ether 1.59
    m-xylene 0.65
    p-xylene 0.7
    chlorobenzene 1.46
    dimethyl carbonate 4.23
    n-octane 0.04
    formamide 7.16
    cyclopentanone 26.52
    2-pentanone 4.29
    anisole 1.9
    cyclopentyl methyl ether 3.82
    gamma-butyrolactone 21.44
    1-methoxy-2-propanol 6.71
    pyridine 14.12
    3-pentanone 4.15
    furfural 13.4
    n-dodecane 0.05
    diethylene glycol 5.95
    diisopropyl ether 0.31
    tert-amyl alcohol 1.07
    acetylacetone 7.73
    n-hexadecane 0.06
    acetophenone 3.08
    methyl propionate 4.23
    isopentyl acetate 1.72
    trichloroethylene 9.77
    n-nonanol 0.65
    cyclohexanol 1.28
    benzyl alcohol 2.02
    2-ethylhexanol 0.49
    isooctanol 0.54
    dipropyl ether 1.31
    1,2-dichlorobenzene 1.14
    ethyl lactate 1.74
    propylene carbonate 4.9
    n-methylformamide 9.34
    2-pentanol 0.6
    n-pentane 0.04
    1-propoxy-2-propanol 3.96
    1-methoxy-2-propyl acetate 5.07
    2-(2-methoxypropoxy) propanol 3.88
    mesitylene 0.32
    ε-caprolactone 7.25
    p-cymene 0.43
    epichlorohydrin 24.54
    1,1,1-trichloroethane 1.49
    2-aminoethanol 2.2
    morpholine-4-carbaldehyde 23.07
    sulfolane 34.49
    2,2,4-trimethylpentane 0.02
    2-methyltetrahydrofuran 8.05
    n-hexyl acetate 1.65
    isooctane 0.01
    2-(2-butoxyethoxy)ethanol 5.14
    sec-butyl acetate 1.2
    tert-butyl acetate 2.19
    decalin 0.04
    glycerin 4.32
    diglyme 9.83
    acrylic acid 4.21
    isopropyl myristate 1.05
    n-butyric acid 2.27
    acetyl acetate 1.98
    di(2-ethylhexyl) phthalate 1.35
    ethyl propionate 1.86
    nitromethane 14.38
    1,2-diethoxyethane 3.66
    benzonitrile 2.56
    trioctyl phosphate 0.87
    1-bromopropane 1.18
    gamma-valerolactone 29.62
    n-decanol 0.56
    triethyl phosphate 1.11
    4-methyl-2-pentanol 0.32
    propionitrile 2.64
    vinylene carbonate 4.59
    1,1,2-trichlorotrifluoroethane 12.76
    DMS 3.36
    cumene 0.28
    2-octanol 0.43
    2-hexanone 3.01
    octyl acetate 1.33
    limonene 0.54
    1,2-dimethoxyethane 9.06
    ethyl orthosilicate 0.96
    tributyl phosphate 1.01
    diacetone alcohol 4.22
    N,N-dimethylaniline 1.23
    acrylonitrile 5.53
    aniline 2.5
    1,3-propanediol 2.94
    bromobenzene 1.31
    dibromomethane 2.01
    1,1,2,2-tetrachloroethane 6.25
    2-methyl-cyclohexyl acetate 1.69
    tetrabutyl urea 2.38
    diisobutyl methanol 0.39
    2-phenylethanol 2.25
    styrene 0.67
    dioctyl adipate 1.89
    dimethyl sulfate 7.6
    ethyl butyrate 1.8
    methyl lactate 4.19
    butyl lactate 2.03
    diethyl carbonate 1.22
    propanediol butyl ether 2.28
    triethyl orthoformate 1.61
    p-tert-butyltoluene 0.41
    methyl 4-tert-butylbenzoate 3.25
    morpholine 13.51
    tert-butylamine 0.42
    n-dodecanol 0.46
    dimethoxymethane 12.21
    ethylene carbonate 3.17
    cyrene 5.62
    2-ethoxyethyl acetate 4.19
    2-ethylhexyl acetate 1.34
    1,2,4-trichlorobenzene 2.25
    4-methylpyridine 6.65
    dibutyl ether 0.94
    2,6-dimethyl-4-heptanol 0.39
    DEF 5.65
    dimethyl isosorbide 9.49
    tetrachloroethylene 3.21
    eugenol 3.73
    triacetin 3.03
    span 80 3.08
    1,4-butanediol 0.89
    1,1-dichloroethane 1.85
    2-methyl-1-pentanol 0.67
    methyl formate 7.72
    2-methyl-1-butanol 0.86
    n-decane 0.06
    butyronitrile 1.67
    3,7-dimethyl-1-octanol 0.5
    1-chlorooctane 0.31
    1-chlorotetradecane 0.2
    n-nonane 0.05
    undecane 0.06
    tert-butylcyclohexane 0.03
    cyclooctane 0.03
    cyclopentanol 2.92
    tetrahydropyran 5.64
    tert-amyl methyl ether 1.1
    2,5,8-trioxanonane 8.42
    1-hexene 0.22
    2-isopropoxyethanol 2.55
    2,2,2-trifluoroethanol 1.63
    methyl butyrate 2.52

    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