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Ascorbic acid

Cas:
50-81-7
Molecular Structure:
MDL:
--MFCD00064328
Molecular Formula:
C6H8O6
Molecular Weight:
176.12
Alias:
L-抗坏血酸,维他命C,维生素C,丙种维生素,2,3,4,5,6-五羟基-2-己烯酸-4-内酯 Vitamin C L-Ascorbic acid L-Xyloascorbic acid 3-Oxo-L-gulofura-nolactone(enol form) L-Threoascorbic acid Antiscorbutic factor
Product order:
Name Specifications Packing Price Delivery
Ascorbic acid 植物细胞培养 500g RMB 1417.9
Ascorbic acid 植物细胞培养 100g RMB 327.8
Ascorbic acid 用于细胞培养 500g RMB 844.8
Ascorbic acid 用于细胞培养 100g RMB 217.8
Ascorbic acid 用于细胞培养 25g RMB 173.8
Ascorbic acid ≥99.9998% (metals basis) 25g RMB 1383.8
Ascorbic acid ≥99.9998% (metals basis) 5g RMB 316.8
Ascorbic acid 分析标准品 250Mg RMB 424.6
Ascorbic acid USP 500g RMB 990
Ascorbic acid USP 100g RMB 440
Ascorbic acid ACS 500g RMB 207.9
Ascorbic acid AR 500g RMB 118.8
Character:
白色结晶或粉末。在空气中遇光渐变黄,水溶液呈酸性反应,在空气中易氧化变质。溶于水、醇,不溶于苯、氯仿及乙醚.
熔点: 190-192℃
比旋光度:20.5°
Quality Standard:
 
   GB/T 15347-94
项目Item                                               分析纯
                                                        (AR)
含量(C6H8O6)Assay,%                                    ≥ 99.7
比旋光度[α]20DSpecitic rotation                  +20.5°~+21.5°
澄清度试验Clarity                                         合格
灼烧残渣(以硫酸盐计)Ignition residue,%                 ≤ 0.05
干燥失重Drying loss,%                                 ≤ 0.1
氯化物(Cl)Chloride,%                                   ≤ 0.005
硫酸盐(SO4)Sulfate,%                                   ≤ 0.002
铁(Fe)Iron,%                                          ≤ 0.0002
重金属(以Pb计)Heavy metals,%                           ≤ 0.001


ACS级
项目名称Item                                          ACS Grade
含量(C6H8O6)Assay                                      ≥99.0%
比旋光度[α]25℃DSpecific rotation                      21.0°±0.5°
灼烧残渣Residue after ignition                         ≤0.1%
重金属(以Pb计)Heavy metals(as Pb)                      ≤0.002%
铁(Fe)Iron(Fe)                                         ≤0.001%


品级Grade                               用于细胞培养  
                                        (for cell culture)
外观Appearance                          白色至类白色粉末
红外光谱鉴别Infrared spectrometry       Conforms
纯度Purity                              ≥98.0% (碘量滴定)  
水溶解试验solubility in water           合格,50 MG/ML
细胞培养试验Cell culture test           PASS


品级Grade                               用于植物细胞培养  
                                        (for plant cell culture)
外观Appearance                          白色至类白色粉末
红外光谱鉴别Infrared spectrometry       Conforms
纯度Purity                              ≥98.0% (碘量滴定)  
水溶解试验solubility in water           合格,50 MG/ML
植物细胞培养试验Plant cell culture test PASS

USP
ASSAY (C6H8O6) 99.0 - 100.5 % 
SPECIFIC ROTATION [a]D +20.5 TO +21.5 
APPEARANCE AS REPORTED 
RESIDUE ON IGNITION -- 0.1 % 
HEAVY METALS -- 0.002 % 

Storage:
密封避光干燥阴凉处保存。 避免与金属接触
用途  测定砷、铁、磷及碘的基准试剂,色谱分析试剂,抗氧剂,掩蔽剂,还原剂
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