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Á¦Ç°¸í È­ÇÐ½Ä CAS No. º°¸í
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Tartaric acid
ºÐÀÚ½Ä : C4H6O6
½Ã¼º½Ä : HOOC(CHOH)2COOH
L type : 87-69-4
DL type : 133-37-9
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Molecular formula : C4H6O6 (Basic formula) HO2CCH(OH)CH(OH)CO2H (Structural formula), Molar mass : 150.087 g/mol, Appearance : white powder, Density : 1.79 g/mL (H2O), Melting point : 171–174 ¡ÆC (L-tartaric) 206 ¡ÆC (DL, racemic) 146–148 ¡ÆC (meso), Slubility in water : 133 g/100ml (20¡ÆC), Acidity (pKa) : L(+) 25¡ÆC :pKa1= 2.95 pKa2= 4.25 meso 25¡ÆC: pKa1= 3.22 pKa2= 4.85

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L type, Characteristics : Granular ; white of almost white ; or colourless crystals ; very soluble in water and ethanol, Assay : 99.5%-101.0%, specific optical rotation : +12.0-+12.8, Calcium : <200ppm, Heavy metals : <10ppm, Chlorides : <100ppm, Oxalic acid : <350ppm, Sulphates : <150ppm, Loss on drying : <0.2%, Sulphated ash : <0.1%

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DL type, Apperance : White crystal powder, Content : >99.7%, Melting point : 200-206BEG.C, H2O : <0.259%, Sulphate : <0.04%, Heavy metal (Pb) : <0.001%

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