Acid Red 52

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  • Identifiers

    CAS number
    3520-42-1

    Molecular formula
    C27H29N2NaO7S2

    SMILES
    CCN(CC)C1=CC2=C(C=C1)C(=C3C=CC(=[N+](CC)CC)C=C3O2)C4=C(C=C(C=C4)S(=O)(=O)[O-])S(=O)(=O)[O-].[Na+]

    Safety labels

  • Odor profile

    Fragrance
    Odorless 63.31%
    Savory 22.55%
    Roasted 20.88%
    Cooked 20.58%
    Grape 20.1%
    Meaty 17.8%
    Fatty 17.7%
    Animal 17.54%
    Milky 16.84%
    Bitter 16.8%

     

    Flavor
    Bitter 85.86%
    Odorless 26.59%
    Bland 20.73%
    Nitrile 19.47%
    Cedarleaf 18.69%
    Lovage 18.05%
    Heather 17.73%
    Very strong 17.61%
    Broom 17.58%
    Genet 17.55%

     

    Odor impact est.
    Low

  • Properties

    pKa est.
    6.77 (neutral)

    Molecular weight
    580.7 g/mol

    Flash point

    • 360.87 ˚C est.

  • Synonyms

    • Acid red 52
    • C.I. Acid Red 52
    • Lissamine Rhodamine
    • Acid Rhodamine B
    • Xylene Red B
    • Amido Rhodamine B
    • Kiton Rhodamine B
    • Acid Red XB
    • Food Red 106
    • Fenazo Pink XXB
    • Solar Rhodamine B
    • Amacid Rhodamine B
    • Erio Acid Red XB
    • Erio Acid Red XBC
    • Red No. 106
    • Acid Leather Red KB
    • Pontacyl Brilliant Pink
    • Brilliant Acid Rhodamine B
    • Red 106
    • Aizen Food Red No. 106
    • Brilliant Superlan Rhodamine B
    • Brilliant Superlan Rhodamine 2B
    • CI 45100
    • 821LWZ3R6R
    • DTXSID7021235
    • VIBRACOLOR RED ARE52
    • Xanthylium, 3,6-bis(diethylamino)-9-(2,4-disulfophenyl)-, hydroxide, inner salt, sodium salt
    • COVACAP ROSE W 4102
    • CHEBI:52101
    • DTXCID601333854
    • Ammonium, (6-(diethylamino)-9-(2,4-disulfophenyl)-3H-xanthen-3-ylidene)diethyl-, hydroxide, inner salt, sodium salt
    • ETHANAMINIUM, N-(6-(DIETHYLAMINO)-9-(2,4-DISULFOPHENYL)-3H-XANTHEN-3-YLIDENE)-N-ETHYL-, HYDROXIDE, INNER SALT, SODIUM SALT
    • RefChem:552642
    • 222-529-8
    • 3520-42-1
    • Sulforhodamine B sodium salt
    • Xylene Red
    • Food red no. 106
    • C.I. 45100
    • MFCD00010180
    • C.I.ACID RED 52
    • sodium;4-[3-(diethylamino)-6-diethylazaniumylidenexanthen-9-yl]benzene-1,3-disulfonate
    • Acid Red 52;Kiton Red 620
    • Sulforhodamine B (sodium salt)
    • Sodium 4-(3,6-bis(diethylamino)xanthylium-9-yl)benzene-1,3-disulfonate
    • 11119-62-3
    • MLS001195097
    • CCRIS 2446
    • SMR000554424
    • EINECS 222-529-8
    • UNII-821LWZ3R6R
    • C27H29N2NaO7S2
    • Acidred52
    • sodium;4-[3-(diethylamino)-6-diethyliminio-xanthen-9-yl]benzene-1,3-disulfonate
    • PHLOXINE RHODAMINE
    • CI ACID RED 52
    • JAPAN RED 106
    • Hydrogen 3,6-bis(diethylamino)-9-(2,4-disulphonatophenyl)xanthylium, sodium salt
    • Xanthylium, 3,6-bis(diethylamino)-9-(2,4-disulfophenyl)-, inner salt, sodium salt
    • MLS003878226
    • CHEMBL1306565
    • SCHEMBL16593265
    • SCHEMBL29355331
    • SCHEMBL30412962
    • MSK5810
    • Acid Red 52; Kiton Red 620
    • HMS2883G10
    • Tox21_200080
    • s5976
    • AKOS000283079
    • AKOS015903434
    • FA41279
    • Xanthylium, 3,6-bis(diethylamino)-9-(2,4-disulfophenyl)-, inner salt, sodium salt (1:1)
    • NCGC00257634-01
    • DA-70530
    • Ethanaminium, N-(6-(diethylamino)-9-(2,4-disulfophenyl)-3H-xanthen-3-ylidene)-N- -ethyl-, hydroxide, inner salt, sodium salt
    • N-(6-(Diethylamino)-9-(2,4-disulfophenyl)-3H-xanthen-3-ylidene)-N- -ethyl ethanaminium, hydroxide, inner salt, sodium salt
    • N-(6-(Diethylamino)-9-(2,4-disulfophenyl)-3H-xanthen-3-ylidene)-N- -ethylethanaminium, hydroxide, inner salt, sodium salt
    • SY048598
    • CAS-3520-42-1
    • A0600
    • Acid Red 52 100 microg/mL in Acetonitrile
    • F0143
    • NS00013510
    • ST51016151
    • C20348
    • H11924
    • F540176
    • sodium 4-[3,6-bis(diethylamino)xanthenium-9-yl]benzene-1,3-disulfonate
    • Sodium 4-(6-(diethylamino)-3-(diethyliminio)-3H-xanthen-9-yl)benzene-1,3-disulfonate
    • Sodium 4-[3,6-bis(diethylamino)xanthen-10-ium-9-yl]benzene-1,3-disulfonate
    • 4-[3-(diethylamino)-6-(diethylylidene)xanthen-9-yl]benzene-1,3-disulfonic acid , sodium salt
    • N-(6-(DIETHYLAMINO)-9-(2,4-DISULFOPHENYL)-3H-XANTHEN-3-YLIDENE)-N-ETHYL ETHANAMINIUM, HYDROXIDE, INNER SALT, SODIUM SALT
    • 3520-42-1

  • Applications

    Acid Red 52 (CAS 3520-42-1) is an acid dye used mainly for dyeing protein fibers such as wool and silk, as well as nylon fabrics; it is also used in leather dyeing and finishing. In addition, it serves as a colorant in industrial inks and coatings where acid-dye compatibility is important, and it can be used in textile printing processes. The compound may also function as an intermediate for the synthesis of related azo dyes in chemical manufacturing.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 1.94
    methanol 6.24
    isopropanol 0.91
    water 0.1
    ethyl acetate 1.94
    n-propanol 1.41
    acetone 4.68
    n-butanol 0.75
    acetonitrile 2.05
    DMF 44.29
    toluene 0.27
    isobutanol 0.67
    1,4-dioxane 3.22
    methyl acetate 4.62
    THF 4.78
    2-butanone 4.51
    n-pentanol 0.48
    sec-butanol 0.79
    n-hexane 0.01
    ethylene glycol 3.13
    NMP 58.1
    cyclohexane 0.02
    DMSO 17.11
    n-butyl acetate 0.97
    n-octanol 0.13
    chloroform 8.0
    n-propyl acetate 1.35
    acetic acid 12.04
    dichloromethane 9.33
    cyclohexanone 4.44
    propylene glycol 3.22
    isopropyl acetate 0.95
    DMAc 55.66
    2-ethoxyethanol 4.39
    isopentanol 0.43
    n-heptane 0.02
    ethyl formate 2.88
    1,2-dichloroethane 3.58
    n-hexanol 0.26
    2-methoxyethanol 12.07
    isobutyl acetate 0.5
    tetrachloromethane 0.49
    n-pentyl acetate 0.84
    transcutol 4.47
    n-heptanol 0.24
    ethylbenzene 0.11
    MIBK 0.7
    2-propoxyethanol 3.86
    tert-butanol 0.58
    MTBE 0.38
    2-butoxyethanol 2.01
    propionic acid 6.05
    o-xylene 0.24
    formic acid 15.01
    diethyl ether 0.67
    m-xylene 0.16
    p-xylene 0.19
    chlorobenzene 0.69
    dimethyl carbonate 5.78
    n-octane 0.01
    formamide 21.87
    cyclopentanone 8.42
    2-pentanone 1.88
    anisole 0.61
    cyclopentyl methyl ether 0.86
    gamma-butyrolactone 14.3
    1-methoxy-2-propanol 6.07
    pyridine 4.43
    3-pentanone 2.1
    furfural 14.55
    n-dodecane 0.01
    diethylene glycol 5.63
    diisopropyl ether 0.1
    tert-amyl alcohol 0.59
    acetylacetone 3.9
    n-hexadecane 0.01
    acetophenone 1.66
    methyl propionate 4.15
    isopentyl acetate 0.69
    trichloroethylene 12.41
    n-nonanol 0.15
    cyclohexanol 0.58
    benzyl alcohol 1.22
    2-ethylhexanol 0.16
    isooctanol 0.17
    dipropyl ether 0.36
    1,2-dichlorobenzene 0.86
    ethyl lactate 2.25
    propylene carbonate 5.51
    n-methylformamide 18.53
    2-pentanol 0.35
    n-pentane 0.02
    1-propoxy-2-propanol 2.18
    1-methoxy-2-propyl acetate 2.38
    2-(2-methoxypropoxy) propanol 2.44
    mesitylene 0.08
    ε-caprolactone 4.64
    p-cymene 0.1
    epichlorohydrin 10.6
    1,1,1-trichloroethane 1.61
    2-aminoethanol 3.99
    morpholine-4-carbaldehyde 27.97
    sulfolane 22.76
    2,2,4-trimethylpentane 0.01
    2-methyltetrahydrofuran 1.65
    n-hexyl acetate 0.56
    isooctane 0.0
    2-(2-butoxyethoxy)ethanol 2.2
    sec-butyl acetate 0.65
    tert-butyl acetate 0.69
    decalin 0.01
    glycerin 9.46
    diglyme 5.51
    acrylic acid 10.78
    isopropyl myristate 0.2
    n-butyric acid 3.46
    acetyl acetate 2.13
    di(2-ethylhexyl) phthalate 0.63
    ethyl propionate 1.26
    nitromethane 28.01
    1,2-diethoxyethane 1.03
    benzonitrile 1.07
    trioctyl phosphate 0.31
    1-bromopropane 0.73
    gamma-valerolactone 20.33
    n-decanol 0.11
    triethyl phosphate 0.83
    4-methyl-2-pentanol 0.15
    propionitrile 1.46
    vinylene carbonate 7.53
    1,1,2-trichlorotrifluoroethane 22.65
    DMS 2.45
    cumene 0.07
    2-octanol 0.12
    2-hexanone 1.15
    octyl acetate 0.34
    limonene 0.13
    1,2-dimethoxyethane 5.7
    ethyl orthosilicate 0.63
    tributyl phosphate 0.43
    diacetone alcohol 2.03
    N,N-dimethylaniline 0.55
    acrylonitrile 3.88
    aniline 1.23
    1,3-propanediol 3.37
    bromobenzene 0.54
    dibromomethane 2.78
    1,1,2,2-tetrachloroethane 8.13
    2-methyl-cyclohexyl acetate 0.78
    tetrabutyl urea 0.83
    diisobutyl methanol 0.09
    2-phenylethanol 0.87
    styrene 0.18
    dioctyl adipate 0.62
    dimethyl sulfate 15.76
    ethyl butyrate 0.92
    methyl lactate 7.48
    butyl lactate 1.71
    diethyl carbonate 0.91
    propanediol butyl ether 1.56
    triethyl orthoformate 0.9
    p-tert-butyltoluene 0.08
    methyl 4-tert-butylbenzoate 1.71
    morpholine 5.06
    tert-butylamine 0.2
    n-dodecanol 0.07
    dimethoxymethane 10.57
    ethylene carbonate 4.34
    cyrene 5.59
    2-ethoxyethyl acetate 2.45
    2-ethylhexyl acetate 0.56
    1,2,4-trichlorobenzene 1.82
    4-methylpyridine 2.6
    dibutyl ether 0.15
    2,6-dimethyl-4-heptanol 0.09
    DEF 5.47
    dimethyl isosorbide 4.48
    tetrachloroethylene 4.79
    eugenol 2.27
    triacetin 2.51
    span 80 1.66
    1,4-butanediol 1.34
    1,1-dichloroethane 2.1
    2-methyl-1-pentanol 0.34
    methyl formate 13.42
    2-methyl-1-butanol 0.53
    n-decane 0.01
    butyronitrile 0.78
    3,7-dimethyl-1-octanol 0.11
    1-chlorooctane 0.06
    1-chlorotetradecane 0.03
    n-nonane 0.01
    undecane 0.01
    tert-butylcyclohexane 0.01
    cyclooctane 0.01
    cyclopentanol 1.29
    tetrahydropyran 1.12
    tert-amyl methyl ether 0.38
    2,5,8-trioxanonane 3.85
    1-hexene 0.08
    2-isopropoxyethanol 1.97
    2,2,2-trifluoroethanol 9.2
    methyl butyrate 1.88

    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