DL-Tartaric acid

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  • Identifiers

    CAS number
    526-83-0

    Molecular formula
    C4H6O6

    SMILES
    C(C(C(=O)O)O)(C(=O)O)O

    Safety labels

    Irritant
    Irritant

  • Odor profile

    Fragrance
    Odorless 66.48%
    Caramellic 42.18%
    Sour 35.3%
    Buttery 27.22%
    Sharp 25.82%
    Burnt 24.72%
    Sweet 20.49%
    Milky 19.56%
    Savory 19.39%
    Clean 19.36%

     

    Flavor
    Odorless 72.22%
    Very mild 38.64%
    Sour 32.94%
    Caramellic 26.95%
    Mild 24.69%
    Bland 23.67%
    Sweet-like 22.71%
    Yeast 22.24%
    Acidic 21.69%
    Soy 19.04%

     

    Odor impact est.
    Low

  • Properties

    XLogP3-AA
    -1.9

    pKa est.
    3.83 (weak acid)

    Molecular weight
    150.09 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra slow

    Boiling point est.
    380°C

    Melting point expt.

    • 206 °C

    Flash point

    • 205.67 ˚C est.
    • 210 °C c.c.

    Solubility expt.

    • 1 G DISSOLVES IN 162 ML WATER, IN 16 ML BOILING WATER, IN 8820 ML ALCOHOL; READILY SOL IN DILUTED MINERAL ACIDS; SOL IN SOLN OF ALKALIES OR BORAX; IN WATER APPROX 0.4% @ 10 °C TO 6% @ 100 °C
    • Solubility in water, g/l at 20 °C: 1400 (very soluble)

  • Synonyms

    • DL-Tartaric acid
    • 2,3-Dihydroxysuccinic acid
    • tartaric acid
    • 2,3-Dihydroxybutanedioic acid
    • 526-83-0
    • 133-37-9
    • Racemic acid
    • Uvic acid
    • Traubensaure
    • Racemic tartaric acid
    • DL-Tartrate
    • Paratartaric acid
    • Paratartaric aicd
    • BUTANEDIOIC ACID, 2,3-DIHYDROXY-
    • Resolvable tartaric acid
    • NSC62778
    • Tartaric acid D,L
    • CHEBI:15674
    • dl-2,3-dihydroxybutanedioic acid
    • (2RS,3RS)-Tartaric acid
    • tartrate
    • E-7050 (2S,3S)-2,3-dihydroxysuccinic acid
    • NSC 148314
    • Tartaric acid, L-(+)-
    • C4H6O6
    • 1007601-97-9
    • Butanedioic acid, 2,3-dihydroxy-(R*,R*)-(.+/-.)-
    • Butanedioic acid, 2,3-dihydroxy-, (R*,R*)-
    • 868-14-4
    • MFCD00071626
    • Tartaric acid (VAN)
    • Kyselina vinna [Czech]
    • NSC155080
    • Tartaric acid [USAN:JAN]
    • 2,3-Dihydrosuccinic acid
    • (.+-.)-Tartaric acid
    • DTXSID5046986
    • d-alpha,beta-Dihydroxysuccinic acid
    • Butanedioic acid, 2,3-dihydroxy-; 2,3-Dihydroxybutanedioic acid
    • NSC-148314
    • Kyselina 2,3-dihydroxybutandiova [Czech]
    • (+) tartaric acid
    • (-) tartaric acid
    • MFCD00064206
    • 1,2-dicarboxylic acid
    • WLN: QVYQYQVQ
    • (-) D-Tartaric acid
    • Sal tartar (Salt/Mix)
    • Tartaric acid, (DL)-
    • Butanedioic acid, 2,3-dihydroxy- (R-(R*,R*))-
    • Malic acid, 3-hydroxy-
    • 2,3-Dihydroxysuccinicacid
    • Succinic acid,3-dihydroxy
    • SCHEMBL848
    • bmse000167
    • Succinic acid,3-dihydroxy-
    • (.+/-.)-Tartaric acid
    • Oprea1_827092
    • TARTARIC ACID, (L)
    • Tartaric acid, (.+-.)-
    • Butanedioic acid,3-dihydroxy-
    • CHEMBL333714
    • Dihydroxysuccinic acid, (DL)-
    • Tartaric acid, (.+/-.)-
    • DTXCID3026986
    • DTXSID501031477
    • HMS3370M15
    • (+)-2,3-dihydroxybutanedioic acid
    • BCP14303
    • HY-N2436
    • Tox21_302052
    • BBL011588
    • NSC133735
    • NSC148314
    • NSC608773
    • s2997
    • STK387106
    • 2,3-Dihydroxysuccinic acid, (DL)-
    • 3-carboxy-2,3-dihydroxypropanoic acid
    • AKOS000120086
    • AKOS016844048
    • FT34258
    • NSC-133735
    • NSC-608773
    • SB44180
    • SB44181
    • SMP2_000051
    • D(-)-Tartaric acid; DL-Tartaric acid;
    • d-.alpha.,.beta.-Dihydroxysuccinic acid
    • NCGC00256063-01
    • NCGC00347131-03
    • AS-10983
    • CAS-133-37-9
    • DA-62945
    • NCI60_001102
    • (+)-2,3-dihydroxy-1,4-butanedioic acid
    • DB-016129
    • DB-016159
    • DB-042899
    • CS-0022654
    • NS00078822
    • NS00079339
    • NS00079739
    • T0001
    • (+/-)-2,3-dihydroxy-1,4-butanedioic acid
    • 2,3-dihydroxy-[R-(R*,R*)]-Butanedioicacid
    • EN300-19175
    • Butanedioic acid,3-dihydroxy- [R-(R*,R*)]-
    • Q194322
    • Butanedioic acid,3-dihydroxy-, (R*,R*)-(.+-.)-
    • F2191-0230
    • Z104473036
    • (2S,3S)-(-)-Tartaric acid; D(-)-Threaric acid;D(-)-Dihydroxysuccinic acid
    • Copper, mixt. with [R-(R*,R*)]-2,3-dihydroxybutanedioic acid monopotassium salt

  • Applications

    DL-Tartaric acid is widely used as an acidulant and acidity regulator in food and beverage processing (CAS 526-83-0), including baking, confectionery, and wine, providing souring effects and helping to stabilize pH in formulations. In pharmaceuticals and organic synthesis, it serves as a chiral auxiliary and a precursor for tartrate esters, enabling enantioselective transformations and the preparation of chiral compounds. In cosmetics and personal care, it functions as a pH adjuster and mild acidifier in creams, lotions, and cleansers, helping to stabilize formulations and improve texture. In cleaning and industrial formulations, it is used as a mild organic acid additive for descaling and formulation stabilization.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 152.39
    methanol 241.92
    isopropanol 77.16
    water 948.08
    ethyl acetate 5.63
    n-propanol 77.51
    acetone 53.33
    n-butanol 47.63
    acetonitrile 7.21
    DMF 607.07
    toluene 2.36
    isobutanol 31.19
    1,4-dioxane 69.67
    methyl acetate 10.22
    THF 74.66
    2-butanone 18.32
    n-pentanol 19.68
    sec-butanol 42.28
    n-hexane 2.8
    ethylene glycol 392.69
    NMP 178.35
    cyclohexane 5.91
    DMSO 1312.3
    n-butyl acetate 3.14
    n-octanol 7.78
    chloroform 2.91
    n-propyl acetate 3.39
    acetic acid 34.35
    dichloromethane 6.3
    cyclohexanone 17.96
    propylene glycol 140.43
    isopropyl acetate 4.47
    DMAc 272.68
    2-ethoxyethanol 117.71
    isopentanol 24.24
    n-heptane 5.5
    ethyl formate 14.92
    1,2-dichloroethane 11.75
    n-hexanol 15.73
    2-methoxyethanol 325.26
    isobutyl acetate 0.77
    tetrachloromethane 3.52
    n-pentyl acetate 2.76
    transcutol 28.56
    n-heptanol 10.43
    ethylbenzene 1.9
    MIBK 8.02
    2-propoxyethanol 50.69
    tert-butanol 71.48
    MTBE 15.35
    2-butoxyethanol 28.58
    propionic acid 21.48
    o-xylene 4.82
    formic acid 268.91
    diethyl ether 20.97
    m-xylene 3.08
    p-xylene 1.78
    chlorobenzene 0.74
    dimethyl carbonate 16.03
    n-octane 2.29
    formamide 324.3
    cyclopentanone 28.62
    2-pentanone 16.81
    anisole 4.8
    cyclopentyl methyl ether 23.07
    gamma-butyrolactone 29.07
    1-methoxy-2-propanol 134.89
    pyridine 11.07
    3-pentanone 12.52
    furfural 26.27
    n-dodecane 1.05
    diethylene glycol 111.98
    diisopropyl ether 5.08
    tert-amyl alcohol 42.54
    acetylacetone 16.31
    n-hexadecane 1.09
    acetophenone 4.93
    methyl propionate 13.97
    isopentyl acetate 1.88
    trichloroethylene 6.04
    n-nonanol 7.07
    cyclohexanol 27.23
    benzyl alcohol 8.47
    2-ethylhexanol 5.9
    isooctanol 5.73
    dipropyl ether 11.16
    1,2-dichlorobenzene 1.05
    ethyl lactate 9.12
    propylene carbonate 6.65
    n-methylformamide 222.47
    2-pentanol 25.47
    n-pentane 5.38
    1-propoxy-2-propanol 25.28
    1-methoxy-2-propyl acetate 6.77
    2-(2-methoxypropoxy) propanol 14.53
    mesitylene 3.14
    ε-caprolactone 13.14
    p-cymene 2.28
    epichlorohydrin 32.66
    1,1,1-trichloroethane 2.88
    2-aminoethanol 276.32
    morpholine-4-carbaldehyde 147.59
    sulfolane 105.5
    2,2,4-trimethylpentane 1.65
    2-methyltetrahydrofuran 26.52
    n-hexyl acetate 3.28
    isooctane 1.03
    2-(2-butoxyethoxy)ethanol 24.15
    sec-butyl acetate 1.76
    tert-butyl acetate 6.14
    decalin 1.36
    glycerin 253.3
    diglyme 47.86
    acrylic acid 24.79
    isopropyl myristate 1.8
    n-butyric acid 14.31
    acetyl acetate 2.62
    di(2-ethylhexyl) phthalate 1.78
    ethyl propionate 4.61
    nitromethane 58.01
    1,2-diethoxyethane 8.52
    benzonitrile 1.97
    trioctyl phosphate 2.65
    1-bromopropane 4.74
    gamma-valerolactone 51.7
    n-decanol 5.72
    triethyl phosphate 3.64
    4-methyl-2-pentanol 9.16
    propionitrile 6.6
    vinylene carbonate 5.38
    1,1,2-trichlorotrifluoroethane 47.07
    DMS 2.96
    cumene 1.6
    2-octanol 5.52
    2-hexanone 5.43
    octyl acetate 2.66
    limonene 3.94
    1,2-dimethoxyethane 98.0
    ethyl orthosilicate 3.6
    tributyl phosphate 1.81
    diacetone alcohol 25.24
    N,N-dimethylaniline 9.22
    acrylonitrile 10.03
    aniline 7.2
    1,3-propanediol 196.7
    bromobenzene 0.59
    dibromomethane 4.32
    1,1,2,2-tetrachloroethane 9.89
    2-methyl-cyclohexyl acetate 1.92
    tetrabutyl urea 5.56
    diisobutyl methanol 4.71
    2-phenylethanol 6.4
    styrene 1.43
    dioctyl adipate 2.26
    dimethyl sulfate 50.15
    ethyl butyrate 3.67
    methyl lactate 35.18
    butyl lactate 5.01
    diethyl carbonate 2.13
    propanediol butyl ether 20.29
    triethyl orthoformate 4.0
    p-tert-butyltoluene 2.56
    methyl 4-tert-butylbenzoate 7.34
    morpholine 102.82
    tert-butylamine 29.51
    n-dodecanol 4.68
    dimethoxymethane 147.04
    ethylene carbonate 5.36
    cyrene 24.14
    2-ethoxyethyl acetate 4.0
    2-ethylhexyl acetate 1.5
    1,2,4-trichlorobenzene 1.32
    4-methylpyridine 7.88
    dibutyl ether 3.88
    2,6-dimethyl-4-heptanol 4.71
    DEF 58.61
    dimethyl isosorbide 17.11
    tetrachloroethylene 10.03
    eugenol 8.96
    triacetin 3.2
    span 80 10.54
    1,4-butanediol 83.44
    1,1-dichloroethane 3.57
    2-methyl-1-pentanol 9.46
    methyl formate 101.55
    2-methyl-1-butanol 24.36
    n-decane 1.7
    butyronitrile 6.14
    3,7-dimethyl-1-octanol 3.97
    1-chlorooctane 2.61
    1-chlorotetradecane 1.31
    n-nonane 1.92
    undecane 1.29
    tert-butylcyclohexane 0.84
    cyclooctane 3.75
    cyclopentanol 39.82
    tetrahydropyran 26.19
    tert-amyl methyl ether 16.48
    2,5,8-trioxanonane 37.02
    1-hexene 3.37
    2-isopropoxyethanol 37.39
    2,2,2-trifluoroethanol 41.66
    methyl butyrate 6.48

    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