Merck
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1.00468

Supelco

L(+)-Ascorbic Acid

for analysis EMSURE® ACS,Reag. Ph Eur

Synonym(s):
L(+)-Ascorbic Acid
CAS Number:
Molecular Weight:
176.12
MDL number:
EC Index Number:
200-066-2

Quality Level

grade

ACS reagent

Agency

reag. Ph. Eur.

product line

EMSURE®

assay

99.0-100.5% (iodometric)

form

crystalline powder

autoignition temp.

380 °C

potency

11900 mg/kg LD50, oral (Rat)

technique(s)

thin layer chromatography (TLC): suitable

impurities

≤0.1% Related substances (unspecified impurities singly) (HPLC)
≤0.15% Related substances (Impurity C) (HPLC)
≤0.15% Related substances (Impurity D) (HPLC)
≤0.2% Oxalic acid
≤0.2% Related substances (sum of impurities (except impurity A and D)) (HPLC)

sulfated ash (600 °C)

≤0.05%

loss

≤0.1% loss on drying, 105 °C

color

clear

pH

2.2-2.5 (20 °C, 50 g/L in H2O)

solubility

330 g/L

density

1.65 g/cm3 at 20 °C

bulk density

500‑900 kg/m3

anion traces

chloride (Cl-): ≤50 ppm
sulfate (SO42-): ≤20 ppm

cation traces

Cu: ≤5 ppm
Fe: ≤2 ppm
heavy metals: ≤10 ppm

storage temp.

15-25°C

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

Related Categories

General description

for analysis EMSURE® ACS,Reag. Ph Eur

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 %

Legal Information

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

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

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Certificate of Quality

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