6-O-ALPHA-D-GALACTOPYRANOSYL-D-GLUCOSE MONOHYDRATE
- CAS NO.：66009-10-7
- Empirical Formula: C12H24O12
- Molecular Weight: 360.31
- MDL number: MFCD00198188
- EINECS: 209-568-6
- SAFETY DATA SHEET (SDS)
- Update Date: 2023-04-23 13:52:06
What is 6-O-ALPHA-D-GALACTOPYRANOSYL-D-GLUCOSE MONOHYDRATE?
Chemical properties
white odorless crystalline powder
Purification Methods
Melibiose crystallises as a hydrate from water or aqueous EtOH. The anomer is obtained by recrystallising 1g from a mixture of 0.35mL of H2O and 0.2mL of EtOH. It crystallises easily with m 179o and mutarotates from [] D 20 +166o to +142.3o (220minutes, c 4, H2O). Crystallisation from MeOH gives the anhydrous form which hydrates to the monohydrate in air. The anomer dihydrate m 85-86o mutarotates from [] D 20 +123.5o to +143.1o (c 4, H2O for anhydrous). [Fletcher & Diehl J Am Chem Soc 74 5774 1952, Beilstein 1 7 III/IV 3075, 17/7 V 206.]
Properties of 6-O-ALPHA-D-GALACTOPYRANOSYL-D-GLUCOSE MONOHYDRATE
| Melting point: | 176-181 °C |
| solubility | H2O: 0.1 g/mL, clear, colorless |
| form | Crystalline Powder |
| color | White |
| Water Solubility | Soluble in water |
| Merck | 14,5820 |
| CAS DataBase Reference | 66009-10-7 |
Safety information for 6-O-ALPHA-D-GALACTOPYRANOSYL-D-GLUCOSE MONOHYDRATE
| Signal word | Warning |
| Pictogram(s) |
 Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H302:Acute toxicity,oral H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation |
| Precautionary Statement Codes |
P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. |
Computed Descriptors for 6-O-ALPHA-D-GALACTOPYRANOSYL-D-GLUCOSE MONOHYDRATE
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product: D(+)Melibiose For Bacteriology 99%
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