Lactose
Lactose (CAS: 63-42-3, Formula: C12H22O11) is a disaccharide sugar derived from galactose and glucose, commonly known as milk sugar. With a molecular weight of 342.30 g/mol, it appears as a white, odourless, crystalline powder. Lactose is a fundamental carbohydrate used extensively in the pharmaceutical industry as an excipient and in various biochemical research applications.
- IUPAC
- Lactosum anhydricum

Pharmaceutical Excipient
Lactose is widely employed as an inert binder and filler in solid dosage forms such as tablets and capsules. Its compatibility with active pharmaceutical ingredients and favourable compressibility make it a standard choice in drug formulation.
Microbiological Culture Media
It serves as a fermentable carbohydrate in selective culture media for bacteria, aiding in the differentiation of microorganisms based on their metabolic capabilities. This is crucial in diagnostic microbiology and research.
Biochemical Research
As a naturally occurring carbohydrate, lactose is utilised in various biochemical studies, including enzymology and metabolic pathway investigations. Its role in biological systems makes it a valuable research reagent.
| Molecular weight | 342.30 |
|---|---|
| Empirical formula | C12H22O11 |
| Protective equipment | Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter |
|---|---|
| Water hazard class (WGK, DE) | 2 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
| Pharmacopeia | testing conforms to Pharmacopeia |
|---|
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Lactose (CAS 63-42-3) used for?
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Lactose is primarily used as a pharmaceutical excipient in tablet and capsule formulations, as a carbohydrate source in microbiological culture media, and in various biochemical research applications.
What are the CAS number and formula for Lactose?
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The CAS number for Lactose is 63-42-3, and its molecular formula is C12H22O11.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Lactose. The product testing conforms to Pharmacopeia standards. Please contact us for specific lot purity information or assay details.
What are the safety and handling precautions for Lactose?
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Lactose has a WGK Germany rating of 2, indicating it is potentially hazardous. Appropriate personal protective equipment, including eyeshields, gloves, and a type N95 (US) or type P1 (EN143) respirator filter, should be used when handling.
How is Lactose packed and shipped by TSS?
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Tech Serve Solutions exports Lactose globally, ensuring appropriate packaging for international transport. Contact our sales team for detailed shipping and export information.
How can I request a quote or sample for Lactose?
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To request a quote or sample for Lactose, please contact our customer service department via the website or direct email. Provide your specific requirements, including quantity and delivery location.
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