48260
D-(+)-Galactosa
suitable for microbiology, ≥99.0%
Sinónimos:
Galactosa
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Fórmula empírica (notación de Hill):
C6H12O6
Número CAS:
Peso molecular:
180.16
UNSPSC Code:
41106212
NACRES:
NA.85
PubChem Substance ID:
EC Number:
200-416-4
Beilstein/REAXYS Number:
1724619
MDL number:
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Permítanos ayudarleassay
≥99.0% (sum of enantiomers, HPLC), ≥99.0%
form
powder
optical activity
[α]20/D +80±1°, 24 hr, c = 5% in H2O
ign. residue
≤0.1% (as SO4)
loss
≤0.1% loss on drying
mp
167-170 °C (dec.)
Quality Level
solubility
H2O: 0.1 g/mL, clear, colorless
anion traces
chloride (Cl-): ≤50 mg/kg, sulfate (SO42-): ≤50 mg/kg
cation traces
As: ≤0.1 mg/kg, Ca: ≤20 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, Mg: ≤5 mg/kg, Mn: ≤5 mg/kg, Na: ≤50 mg/kg, Ni: ≤5 mg/kg, Pb: ≤5 mg/kg, Zn: ≤5 mg/kg
application(s)
microbiology
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General description
Galactose, a member of a group of carbohydrates known as simple sugars (monosaccharides). It is usually found in nature combined with other sugars, as, for example, in lactose (milk sugar). Galactose is also found in complex carbohydrates (see polysaccharide) and in carbohydrate-containing lipids called glycolipids. It is used as a source of carbon and contributes to energy metabolism via its conversion to glucose by the enzymes that constitute the Leloir pathway. It is used in various media for the cultivation of bacteria and fungi. The metabolic steps of D-galactose utilization are catalysed by the GalK (galactokinase), GalT (galactose 1-phosphateuridylyl transferase), and GalE (UDP-galactose-4-epimerase) proteins.
Application
Galactose can be used as a carbohydrate source for diverse organisms for example lactobacilli, coliforms, Salmonella and streptococci. It is a simple monosaccharide that serves as an energy and carbon source for the cultivation of various of bacteria, fungi and yeasts in many industries such as food, pharmaceuticals and cosmetics
Clase de almacenamiento
11 - Combustible Solids
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type N95 (US)
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