alpha-L-Rhamnose

Synonym(s):6-Deoxy-L-mannose;6-Deoxyhexopyranose;6-Deoxymannose;L-Rhamnose

CAS NO.：3615-41-6
Empirical Formula: C6H12O5
Molecular Weight: 164.16
MDL number: MFCD00136036
EINECS: 222-793-4
SAFETY DATA SHEET (SDS)
Update Date: 2024-11-05 08:26:49

What is alpha-L-Rhamnose ?

Chemical properties

White crystals. For equilibrium mixture optical rotation is +9.18 degrees. Very soluble in water and in methanol; soluble in absolute alcohol.

Chemical properties

L-Rhamnose has no odor, but has a very sweet taste.

The Uses of alpha-L-Rhamnose

Synthetic sweetener research.

What are the applications of Application

L-(+)-Rhamnose is a naturally occurring 6-deoxyhexose

Definition

ChEBI: The acyclic form of L-rhamnose.

Flammability and Explosibility

Not classified

Purification Methods

Crystallise the rhamnose from H2O or EtOH. It crystallises easily as the monohydrate by evaporating a solution in MeOH (90%) and H2O (10%). It is also purified by dissolving in a small volume of EtOH, adding a few drops of H2O and cooling. 1H NMR in D2O at 44o contains 60% -pyranose and 40% -pyranose forms [Angyal Adv Carbohydr Chem 42 15 1984.] [Smith J Chem Soc 1035 1940, McGeachin & Beevers Acta Cryst 10 227,230 197, Beilstein 1 IV 4261.]

Properties of alpha-L-Rhamnose

Melting point:	91-95°C
Boiling point:	251.61°C (rough estimate)
Density	1.3058 (rough estimate)
refractive index	1.6400 (estimate)
FEMA	3730 \| L-RHAMNOSE
storage temp.	2-8°C
pka	12.50±0.20(Predicted)
form	Solid
color	White to off-white
Odor	at 100.00 %. odorless
Water Solubility	521.5g/L(40 ºC)
Merck	8172
CAS DataBase Reference	3615-41-6(CAS DataBase Reference)
NIST Chemistry Reference	L-Mannose, 6-deoxy-(3615-41-6)
EPA Substance Registry System	L-Mannose, 6-deoxy- (3615-41-6)

Safety information for alpha-L-Rhamnose

Signal word	Warning
Pictogram(s)	Exclamation Mark Irritant GHS07
GHS Hazard Statements	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.