If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/418/501/product-dating-information-06-25-mk.pdf
61339
D-Laktose Monohydrat
≥99% (HPLC), BioUltra
Synonym(e):
β-D-Gal-(1→4)-D-Glc, 4-O-β-D-Galactopyranosyl-D-glucose, Milchzucker
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InChI key
HBDJFVFTHLOSDW-XBLONOLSSA-N
InChI
1S/C12H22O11.H2O/c13-1-4(16)7(18)11(5(17)2-14)23-12-10(21)9(20)8(19)6(3-15)22-12;/h1,4-12,14-21H,2-3H2;1H2/t4-,5+,6+,7+,8-,9-,10+,11+,12-;/m0./s1
SMILES string
O.OC[C@@H](O)[C@@H](O[C@@H]1O[C@H](CO)[C@H](O)[C@H](O)[C@H]1O)[C@H](O)[C@@H](O)C=O
product line
BioUltra
assay
≥99% (HPLC)
form
solid
optical activity
[α]20/D +53±1°, 22 hr, c = 10% in H2O
impurities
insoluble matter, passes filter test
ign. residue
≤0.05% (as SO4)
color
colorless
pH
3.5-6.0 (25 °C, 0.5 M in H2O)
solubility
H2O: 0.5 M at 20 °C, clear, colorless
anion traces
chloride (Cl-): ≤50 mg/kg, sulfate (SO42-): ≤50 mg/kg
cation traces
Al: ≤5 mg/kg, As: ≤0.1 mg/kg, Ba: ≤5 mg/kg, Bi: ≤5 mg/kg, Ca: ≤10 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
λ
0.5 M in H2O
UV absorption
λ: 260 nm Amax: 0.02, λ: 280 nm Amax: 0.02
Quality Level
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1 of 4
Dieser Artikel | |||
|---|---|---|---|
| assay ≥99% (HPLC) | assay - | assay - | assay - |
| solubility H2O: 0.5 M at 20 °C, clear, colorless | solubility - | solubility - | solubility - |
| Quality Level 100 | Quality Level 200 | Quality Level 300 | Quality Level - |
| form solid | form powder | form - | form - |
| impurities insoluble matter, passes filter test | impurities dextrose, passes test, sucrose, passes test, ≤0.005% insolubles, 4.0-6.0% water | impurities - | impurities - |
| cation traces Al: ≤5 mg/kg, Ba: ≤5 mg/kg, Ca: ≤10 mg/kg, Co: ≤5 mg/kg, Cu: ≤5 mg/kg, K: ≤50 mg/kg, Mg: ≤5 mg/kg, Mo: ≤5 mg/kg, Ni: ≤5 mg/kg, Sr: ≤5 mg/kg, As: ≤0.1 mg/kg, Cd: ≤5 mg/kg, Fe: ≤5 mg/kg, Mn: ≤5 mg/kg, Pb: ≤5 mg/kg, Bi: ≤5 mg/kg, Li: ≤5 mg/kg, Zn: ≤5 mg/kg, Cr: ≤5 mg/kg, Na: ≤50 mg/kg | cation traces Fe: ≤5 ppm, heavy metals: ≤5 ppm (by ICP) | cation traces - | cation traces - |
Application
Biochem/physiol Actions
Other Notes
Lagerklasse
11 - Combustible Solids
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type N95 (US)
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How can I determine the shelf life / expiration / retest date of this product?
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How is shipping temperature determined? And how is it related to the product storage temperature?
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Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf
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