L(+)-Ascorbic acid

产品介绍：

产品说明

一般描述

分析级 EMSURE^® ACS,Reag. Ph Eur

分析说明

Assay (iodometric)99.0 - 100.5 %Identity (IR-spectrum)conformsAppearancewhite or almost white, cristalline powderAppearance of solution (50 g/l CO₂-free water)clear (≤ 3 NTU) and not so intense in colour than reference solution BY₇pH (50 g/l CO₂-free water)2.1 - 2.6Spec. rotation [α²0/D (100 g/l, water)+20.5 - +21.5 °Chloride (Cl)≤ 50 ppmSulfate (SO₄)≤ 20 ppmCu (Copper)≤ 5 ppmFe (Iron)≤ 2 ppmHeavy metals (ACS)≤ 10 ppmOxalic acid≤ 0.2Related substances (HPLC) (Impurity C)≤ 0.15 %Related substances (HPLC) (Impurity D)≤ 0.15 %Related substances (HPLC) (unspecified impurities singly)≤ 0.10 %Related substances (HPLC) (sum of impurities (except impurity A and D))≤ 0.2 %Sulfated ash (600 °C)≤ 0.05 %Loss on Drying (105 °C)≤ 0.1 %

法律信息

EMSURE is a registered trademark of Merck KGaA, Darmstadt, Germany

基本信息

分子量	176.12
MDL编号	MFCD00064328
EC索引号	200-066-2

产品性质

质量水平	300
等级	ACS reagent
agency	reag. Ph. Eur.
产品线	EMSURE^®
测定	99.0-100.5% (iodometric)
形式	crystalline powder
自燃温度	380 ℃
效能	11900 mg/kg LD₅₀, oral (Rat)
technique(s)	thin layer chromatography (TLC): suitable
颜色	clear
pH值(酸碱度)	2.2-2.5 (20 ℃, 50 g/L in H₂O)
溶解性	330 g/L
密度	1.65 g/cm³ at 20 ℃
堆积密度	500‑900 kg/m³
痕量阴离子	chloride (Cl^-): ≤50 ppm sulfate (SO₄^2-): ≤20 ppm
痕量阳离子	Cu: ≤5 ppm Fe: ≤2 ppm heavy metals: ≤10 ppm
储存温度	15-25℃
InChI	1S/C6H8O6/c7-1-2(8)5-3(9)4(10)6(11)12-5/h2,5,7-8,10-11H,1H2
InChI key	TYQCGQRIZGCHNB-UHFFFAOYSA-N

安全信息

储存分类代码	11 - Combustible Solids
WGK	WGK 1