DL-Tartaric acid

MDL：
MFCD00071626

Molecular Formula：
C4H6O6；HOOC(CHOH)2COOH

Molecular Weight：
150.09

Alias：
右旋葡萄酸,二羟基琥珀酸,酒石酸,R*,R*)-(±)-2,3-二羟基丁二酸,DL-酒石酸,DL-2,3-二羟基丁二酸,DL-(-)-酒石酸,外消旋酒石酸,(2R,3R)-2,3-二羟基, 1,4丁二酸 DL-Dihydroxysuccinic acid DL-2,3-Dihydroxybutanedioic acid

Product order：

Name	Specifications	Packing	Price	Delivery
DL-Tartaric acid	AR	500g	RMB 48.4	促销
DL-Tartaric acid	CP	500g	RMB 39.6	促销
DL-Tartaric acid	ACS	500g	RMB 89.1	促销

Character：
无色结晶或白色粉末，强酸味。溶于水、乙醇、乙醚，不溶于三氯甲烷。
酒石酸存在三种立体异构体：右旋酒石酸、左旋酒石酸和内消旋酒石酸。等量右旋体和左旋体的混合物的旋光性相互抵消，称为外消旋酒石酸。内消旋体不存在于自然界中，可由化学合成。各种酒石酸都是易溶于水的无色结晶。
熔点：200-206℃
闪点: 210℃

Quality Standard：
GB/T 1294-93
项目Item                                                 分析纯   化学纯
                                                          (AR)    (CP)
含量(C4H6O6)Assay,%                                    ≥ 99.5    99.0
澄清度试验Clarity                                         合格     合格
水不溶物Insoluble matter in water,%                    ≤ 0.005    0.01
灼烧残渣(以硫酸盐计)Ignition residue,%                 ≤ 0.01     0.05
氯化物(Cl)Chloride,%                                   ≤ 0.0005   0.001
硫酸盐(SO4)Sulfate,%                                   ≤ 0.005    0.01
磷酸盐(PO4)Phosphate,%                                 ≤ 0.002    0.005
钙(Ca)Calcium,%                                        ≤ 0.002    0.005
铁(Fe)Iron,%                                           ≤ 0.0005   0.001
铜(Cu)Copper,%                                         ≤ 0.0005    --
铅(Pb)Lead,%                                           ≤ 0.0005   0.001

ACS级
项目名称Item                                          ACS Grade
含量(C4H6O6)Assay                                      ≥99.0%
水不溶物Insoluble matter                               ≤0.005%
灼烧残渣Residue after ignition                         ≤0.02%
硫酸盐(SO4)Sulfate                                     ≤0.01%
氯化物(Cl)Chloride(Cl)                                 ≤0.001%
草酸盐(C2O4)Oxalate                                    ≤Passes test
磷酸盐(PO4)Phosphate                                   ≤0.001%
硫化合物(以SO4计)Sulfur compounds                      ≤0.002%
重金属(以Pb计)Heavy metals(as Pb)                      ≤5ppm
铁(Fe)Iron(Fe)                                         ≤5ppm

Storage：
密封保存。