The material specification is 'powder or crystals', which means it can vary from batch to batch. Ascorbic acid can donate electrons, facilitating the reduction of protons (H?) to hydrogen gas (H?). Its ability to undergo oxidation makes it a suitable candidate for these hydrogen evolution reactions. This product has not been tested internally for this application. Given the high purity of this material, it is likely suitable, but this would need to be determined by the end user.
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95209
L-Ascorbinsäure
BioUltra, ≥99.5% (RT)
Synonym(e):
L-Threoascorbinsäure, Anti-Scorbut-Faktor, Vitamin C
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| Größe/SKU | Verfügbarkeit | Preis |
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Über diesen Artikel
Lineare Formel:
C6H8O6
CAS-Nummer:
Molekulargewicht:
176.12
UNSPSC Code:
12352205
NACRES:
NA.79
PubChem Substance ID:
EC Number:
200-066-2
Beilstein/REAXYS Number:
84272
MDL number:
Assay:
≥99.5% (RT)
Form:
powder or crystals
Grade:
biotech. grade
Preise und Verfügbarkeit sind derzeit nicht verfügbar.
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Unterstützung erhaltenbiological source
synthetic
Quality Segment
grade
biotech. grade
product line
BioUltra
assay
≥99.5% (RT)
form
powder or crystals
impurities
insoluble matter, passes filter test
ign. residue
≤0.05% (as SO4)
loss
≤0.05% loss on drying, 20 °C (HV)
color
white to off-white
pH
1.0-2.5 (25 °C, 1 M in H2O)
mp
190-194 °C (dec.)
solubility
H2O: 1 M at 20 °C, clear, colorless
anion traces
chloride (Cl-): ≤50 mg/kg, sulfate (SO42-): ≤20 mg/kg
cation traces
Al: ≤5 mg/kg, As: ≤0.1 mg/kg, Ba: ≤5 mg/kg, Bi: ≤5 mg/kg, Ca: ≤25 mg/kg, Cd: ≤5 mg/kg, Co: ≤5 mg/kg, Cr: ≤5 mg/kg, Cu: ≤5 mg/kg, Fe: ≤5 mg/kg, K: ≤50 mg/kg, Li: ≤5 mg/kg, Mg: ≤5 mg/kg, Mn: ≤5 mg/kg, Mo: ≤5 mg/kg, Na: ≤50 mg/kg, Ni: ≤5 mg/kg, Pb: ≤5 mg/kg, Sr: ≤5 mg/kg, Zn: ≤5 mg/kg
absorption
cut-off at 306 nm in H2O at 1 M
SMILES string
OC([C@]([C@@H](O)CO)([H])O1)=C(O)C1=O
InChI
1S/C6H8O6/c7-1-2(8)5-3(9)4(10)6(11)12-5/h2,5,7-10H,1H2/t2-,5+/m0/s1
InChI key
CIWBSHSKHKDKBQ-JLAZNSOCSA-N
Gene Information
human ... SLC23A2(9962)
General description
L-Ascorbic acid, also known as vitamin C, is a water-soluble vitamin. It is naturally present in a variety of foods such as citrus fruits and vegetables. It is present only in minimal amount in milk.
Application
Biochem/physiol Actions
L-Ascorbic acid (Vitamin C) acts as a potential anti-oxidant and reducing agent. It prevents bacterial mutagenesis induced by N-nitroso compounds. In plants, vitamin C elicits several cellular processes such as growth, apoptosis, pathogen responses, hormone responses, flowering and senescence, and protection against environmental stresses. Vitamin C deficiency is associated with the development of scurvy, prominent - gingivitis, perifollicular hemorrhages, poor wound healing, petechiae and ecchymosis.
Other Notes
Denaturation of proteins; Dimeric association of E. coli RNA polymerase α subunits, studied by cleavage of single cysteine α subunits conjugated to Fe-BABE.
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Dieser Artikel | |||
|---|---|---|---|
| description BioUltra, ≥99.5% (RT) | description reagent grade, crystalline | description analytical standard | description puriss. p.a., ≥99.0% (RT) |
| grade biotech. grade | grade reagent grade | grade analytical standard | grade puriss. p.a. |
| assay ≥99.5% (RT) | assay ≥98% ( with iodine, titration) | assay - | assay ≥99.0% (RT) |
| Quality Level 200 | Quality Level 200 | Quality Level 100 | Quality Level 200 |
| form powder or crystals | form crystalline | form solid | form powder or crystals (possibly with chunks) |
| solubility H2O: 1 M at 20 °C, clear, colorless | solubility water: soluble 50 mg/mL | solubility water: soluble 176 g/L at 20 °C | solubility H2O: 50 mg/mL at 20 °C, clear, almost colorless |
| pH 1.0-2.5 (25 °C, 1 M in H2O) | pH 1.0-2.5 (25 °C, 176 g/L in water) | pH 1.0-2.5 (25 °C, 176 g/L in water) | pH 2.2-2.5 (25 °C, 50 mg/mL in H2O) |
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Lagerklasse
11 - Combustible Solids
Was ist los?
WGK 1
Flammpunkt (°F)
Not applicable
Flammpunkt (°C)
Not applicable
PSA (Persönliche Schutzausrüstung)
Eyeshields, Gloves, type N95 (US)
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The material is in powder or crystal form and whether it’s suitable for hydrogen evolution reaction (HER) measurements?
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