Ascorbic Acid for analysis EMSURE

Code: 1004681000 D2-231

Analysis Note

Assay (iodometric)99.0 - 100.5 %Identity (IR-spectrum)conformsAppearancewhite or almost white, cristalline powderAppearance of solution (50 g/l CO₂-free water)c...


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Analysis Note

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 %

General description

for analysis EMSURE® ACS,Reag. Ph Eur

Legal Information

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

Packaging

100, 500g in Plastic bottle

1kg in Plastic bottle

agencyreag. Ph. Eur.
anion tracessulfate (SO42-): ≤20 ppm, chloride (Cl-): ≤50 ppm
assay99.0-100.5% (iodometric)
autoignition temp.380 °C
bulk density500‑900 kg/m3
cation tracesFe: ≤2 ppm, Cu: ≤5 ppm, heavy metals: ≤10 ppm
colorclear
density1.65 g/cm3 at 20 °C
formcrystalline powder
gradeACS reagent
impurities≤0.15% Related substances (Impurity C) (HPLC), ≤0.2% Oxalic acid, ≤0.15% Related substances (Impurity D) (HPLC), ≤0.1% Related substances (unspecified impurities singly) (HPLC), ≤0.2% Related substances (sum of impurities (except impurity A and D)) (HPLC)
InChI keyTYQCGQRIZGCHNB-UHFFFAOYSA-N
InChI1S/C6H8O6/c7-1-2(8)5-3(9)4(10)6(11)12-5/h2,5,7-8,10-11H,1H2
loss≤0.1% loss on drying, 105 °C
pH2.2-2.5 (20 °C, 50 g/L in H2O)
potency11900 mg/kg LD50, oral (Rat)
product lineEMSURE®
Quality Level300
solubility330 g/L
storage temp.15-25°C
sulfated ash (600 °C)≤0.05%
technique(s)thin layer chromatography (TLC): suitable
Cas Number50-81-7
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