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LACTOSE |
| Synonyms. Lactose; (+)-Lactose; Lactose anhydrous; Milk sugar; 4-(beta-D-Galactosido)-D-glucose; 4-O-beta-D-Galactopyranosyl-D-glucose; Aletobiose; D-Lactose; 1-beta-D-Galactopyranosyl-4-D-glucopyranose; Lactobiose; Lactosum anhydricum; beta-D-galactopyranosyl-(1->4)-D-glucopyranose; (2R,3R,4S,5R,6S)-2-(Hydroxymethyl)-6- ((2R,3S,4R,5R)-4,5,6-trihydroxy-2-(hydroxymethyl)oxan-3-yl) oxyoxane-3,4,5-triol; |
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| PRODUCT IDENTIFICATION | |
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CAS RN |
63-42-3 (anhydrous), 64044-51-5 (hydrate) |
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EINECS RN |
200-559-2 |
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FORMULA |
C12H22O11 |
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MOLE WEIGHT |
342.30 |
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H.S CODE |
1702.11.0000 |
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SMILES |
O([C@@H]1[C@H](O[C@@H](O)[C@@H]([C@H]1O)O)CO)[C@@H]1O[C@ @H] ([C@H](O)[C@@H]([C@H]1O)O)CO |
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CLASSIFICATION |
Flavoring agent, Sweetener, Disaccharide, Excipient |
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EXTRA NOTES |
A disaccharide of GLUCOSE and GALACTOSE in human and cow milk. It is used in pharmacy for tablets, in medicine as a nutrient, and in industry.[MeSH] |
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| PHYSICAL AND CHEMICAL PROPERTIES | |
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PHYSICAL STATE |
white to off-white crystalline powder |
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MELTING POINT |
201 ~ 202 C |
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BOILING POINT |
669 C |
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DENSITY |
1.525 g/cm3 |
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SOLUBILITY IN WATER |
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| SOLVENT SOLUBILITY |
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VAPOR DENSITY |
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log P(octanol-water) |
-5.03 |
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VAPOR PRESSURE |
8.09E-17 mm Hg |
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AUTOIGNITION TEMP |
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| pK |
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REFRACTIVE INDEX |
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FLASH POINT |
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| STABILITY AND REACTIVITY | |
| STABILITY | Stable under normal conditions. |
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INCOMPATIBLE MATERIALS |
Strong oxidizing agents. |
| POLYMERIZATION |
Has not been reported |
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NFPA RATINGS |
Health: 0, Flammability: 0, Reactivity: 0 |
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| EXTERNAL LINKS & GENERAL DESCRIPTION |
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USA.gov - Lactose Wikipedia Linking - Lactose Google Scholar Search - Lactose U.S. National Library of Medicine - Lactose PubChem Compound Summary - Lactose Drug Bank - Lactose KEGG (Kyoto Encyclopedia of Genes and Genomes) - Lactose ChEBI (http://www.ebi.ac.uk/chebi/) - Lactose NCBI (http://www.ncbi.nlm.nih.gov/) - Lactose Material Safety Data Sheet - Lactose Human Metabolome Database - Lactose Hazardous Substances Data Bank - Lactose EPA - Substance Registry Services - Lactose |
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| SALES SPECIFICATION (BP, USP) | |
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APPEARANCE |
white to off-white crystalline powder |
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IDENTIFICATION |
passes tests A,B,C,D |
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ACIDITY/ALKALINITY |
<0.4ml 0.1N NaOH |
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WATER |
5.0% max |
| OPTICAL ROTATION |
+54.4° ~ +55.9° |
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LOSS ON DRYING |
0.5% max |
| RESIDUE ON IGNITION |
0.1% max |
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HEAVY METALS |
5ppm max |
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TPC |
100 cfu/g max |
| Yeast and Moulds |
50 cfu/g max |
| Escherichia coli | Absence |
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| TRANSPORT & REGULATORY INFORMATION | |
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UN NO. |
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| HAZARD CLASS |
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| PACKING GROUP | |
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| SAFETY INFORMATION | |
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HAZARD OVERVIEW |
GHS (Globally Harmonised System) Classification: Not a dangerous substance. Potential Health Effects: Eyes - May cause eye irritation. Skin - May be harmful if absorbed through skin May cause skin irritation. Inhalation - May be harmful if inhaled. May cause respiratory tract irritation. Ingestion - May be harmful if swallowed. |
| HAZARD CODES |
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RISK PHRASES |
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SAFETY PHRASES |
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| PACKING |
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Preserved in light-resistant and well-closed bottles |
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