L-Ascorbic acid

L-Ascorbic acid, puriss. p.a., ACS reagent, reag. ISO, Ph. Eur., 99.7-100.5% (oxidimetric)

synthetic

Ph. Eur., USP/NF, reag. ISO

ACS reagent, puriss. p.a.

99.7-100.5% (oxidimetric)

solid

[α]20/D +20.5 to +21.5°, c = 10% in H₂O

IR spectroscopy: suitable

related substances, in accordance (HPLC), ≤0.001% heavy metals (by ICP-OES)

≤0.05% (as SO₄)

≤0.1% loss on drying, 105 °C

2.1-2.6 (20 °C, 5%)

190-192 °C ((decomp)) (lit.), 190-194 °C (dec.)

water: soluble 176 g/L at 20 °C

chloride (Cl^-): ≤50 mg/kg, sulfate (SO₄^2-): ≤20 mg/kg

As: ≤1 mg/kg, Cu: ≤5 mg/kg, Fe: ≤2 mg/kg, Pb: ≤5 mg/kg, Zn: ≤10 mg/kg

complies for appearance of solution, passes test for identity (IR)

cell analysis

ester, hydroxyl, ketone

OC([C@]([C@@H](O)CO)([H])O1)=C(O)C1=O

1S/C6H8O6/c7-1-2(8)5-3(9)4(10)6(11)12-5/h2,5,7-10H,1H2/t2-,5+/m0/s1

CIWBSHSKHKDKBQ-JLAZNSOCSA-N

human ... SLC23A2(9962)