C00984 Property

Melting point:

169-170oC

Boiling point:

410.8±45.0 °C(Predicted)

Density 

1.732±0.06 g/cm3(Predicted)

storage temp. 

Refrigerator, Under Inert Atmosphere

solubility 

Water (Slightly)

pka

12.12±0.70(Predicted)

color 

White to Off-White

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H302Harmful if swallowed

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P301+P312IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.

P302+P352IF ON SKIN: wash with plenty of soap and water.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

C00984 Chemical Properties,Usage,Production

Uses

α-D-Galactose is the alpha anomer of D-Galactose (G155250), the C-4 epimer of Glucose (G595000). D-Galactose is found in milk and sugar beets as well as being synthesized by the body.

Definition

ChEBI: Alpha-D-galactose is d-Galactopyranose having alpha-configuration at the anomeric centre. It has a role as a mouse metabolite. It is an enantiomer of an alpha-L-galactose.

Purification Methods

-D-Galactose is crystallised twice from aqueous 80% EtOH at -10o, then dried in a vacuum oven at 90o over P2O5 for 10hours. [Link Biochemical Preparations 3 75 1953, Hansen et al. Biochemical Preparations 4 2 1955.] Also purify it by recrystallising the dried solid (150g) in hot H2O (150mL), then adding hot MeOH (250mL) and hot EtOH (500mL), stirring to mix, filtering through a bed of charcoal, and the clear filtrate is stirred to initiate crystallisation. After standing overnight at 10o, the crystals of the -anomer are filtered off by suction, washed with MeOH, then EtOH, and dried (yield 130g), and more can be obtained by evaporation of the filtrate and washing as before. [Wolfrom & Thompson Methods in Carbohydrate Chemistry I 120 1962, Academic Press, Beilstein 1 IV 4336.]