D-Lactose monohy
- CAS NO.：14641-93-1
- Empirical Formula: C12H22O11
- Molecular Weight: 342.3
- MDL number: MFCD00150747
- EINECS: 238-691-8
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-04-22 18:57:36
What is D-Lactose monohy?
Definition
ChEBI: The alpha-anomer of lactose.
General Description
In nature, it only exists in mammalian milk. It belongs to disaccharides, being composed of one molecule of glucose and one molecule of galactose with a sweetness of about 16. Milk contains about 4.3% ~ 4.5% of lactose. There are two isomers of lactose, namely, α-and β-type, being monohydrate and anhydrous, respectively. The α-lactose usually contains one molecule of crystal water with the melting point of 202 °C; β-type is as an anhydride with the melting point of 252 °C and has a higher sweetness and higher solubility than α-type. Lactose is made from whey, a by-product of cheese or casein, and is used in large quantities as a drug excipient, as a nutrient for infants and young children, and as a good medium for penicillin.
It is used as a diluent for soluble powder dispersions, oral capsules, powder inhalers and tablets; lactose is also used in lyophilisates and intravenous injections.
Properties of D-Lactose monohy
| Melting point: | 238 °C |
| Boiling point: | 667.9±55.0 °C(Predicted) |
| Density | 1.76±0.1 g/cm3(Predicted) |
| refractive index | 52.5 ° (C=10, H2O) |
| storage temp. | Inert atmosphere,Room Temperature |
| pka | 12.02±0.70(Predicted) |
| form | Solid |
| color | White to light yellow |
| Merck | 5343 |
| CAS DataBase Reference | 14641-93-1(CAS DataBase Reference) |
| EPA Substance Registry System | .alpha.-D-Glucopyranose, 4-O-.beta.-D-galactopyranosyl- (14641-93-1) |
Safety information for D-Lactose monohy
| 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 D-Lactose monohy
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