MELIBIOSE manufacturers and suppliers

MELIBIOSE suppliers

Properties

Melting point:: 182 °C (dec.) (lit.)

alpha: +138 - +143° (D/20)(c=1, dil. NH4OH,18hr)(calculated on the dried basis)

Boiling point:: 774.5±60.0 °C(Predicted)

Density: 1.68±0.1 g/cm3(Predicted)

storage temp.: Sealed in dry,Room Temperature

solubility: H2O: soluble0.1g/mL, clear, colorless

pka: 12.45±0.20(Predicted)

form: Crystalline Powder

color: White

optical activity: [α]20/D +137±3°, 10 hr, c = 5% in H2O

Water Solubility: Soluble in water at 100mg/ml

Merck: 5820

BRN: 93360

Stability:: Hygroscopic

LogP: -3.200 (est)

Safety Information

WGK Germany: 3

TSCA: Yes

HS Code: 29400090

Use

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.]

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