Sodium dodecyl sulfate
Sodium dodecyl sulfate (SDS), CAS 151-21-3, with the chemical formula CH3(CH2)11OSO3Na, is a crucial anionic detergent and surfactant. It is widely recognised for its excellent emulsifying, foaming, and detergent properties. SDS is indispensable in numerous laboratory applications, including protein solubilisation, cell lysis, and electrophoresis, and serves as a key component in industrial cleaning formulations and personal care products.
- IUPAC
- Dodecyl sodium sulfate,Dodecyl sulfate sodium salt,Lauryl sulfate sodium salt,SDS,Sodium lauryl sulfate
- Synonyms
- Dodecyl sodium sulfateDodecyl sulfate sodium saltLauryl sulfate sodium saltSDSSodium lauryl sulfate
Biochemical and Laboratory Reagent
Utilised extensively in molecular biology for applications such as SDS-PAGE electrophoresis, protein solubilisation, and cell lysis due to its ability to denature proteins and disrupt cell membranes.
Detergent and Surfactant
Acts as a powerful anionic surfactant in industrial cleaning agents and household detergents, facilitating the removal of grease and oils through emulsification and wetting.
Emulsifier in Formulations
Serves as an effective emulsifier in various chemical and personal care formulations, helping to stabilise mixtures of immiscible liquids like oil and water.
Vaccine and Antigen Preparation
Employed in specific biochemical protocols for the preparation and stabilisation of antigens and vaccines, aiding in purification and formulation processes.
| Molecular weight | 288.38 |
|---|---|
| Linear formula | CH3(CH2)11OSO3Na |
| Assay | ≥95.0% |
| Density | 1.03 g/mL at 20 °C |
| Solubility | H2O: soluble0.1 M at 20 °C, clear, colorless |
| Concentration | 20% in H2O |
| Loss on drying | ≤3% loss on drying, 20 °C (HV) |
| Melting point | 204-207 °C(lit.) |
| Impurities tested | DNases, none detectedRNases, none detectedinsoluble matter, passes filter testphosphatases, none detectedproteases, none detected |
| Application | Anionic detergent |
Hazard statements
- H228Flammable solid
- H302Harmful if swallowed
- H315Causes skin irritation
- H318Causes serious eye damage
- H335May cause respiratory irritation
- H412Harmful to aquatic life with long-lasting effects
Precautionary statements
- P210Keep away from heat, sparks and open flames. No smoking
- P261Avoid breathing dust, fume, gas or vapours
- P273Avoid release to the environment
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
| Protective equipment | Eyeshields, Faceshields, full-face particle respirator type N100 (US), Gloves, respirator cartridge type N100 (US), type P1 (EN143) respirator filter, type P3 (EN 143) respirator cartridges |
|---|---|
| Flash point | 170 °C / 338 °F |
| Water hazard class (WGK, DE) | 2 |
| Hazard codes (EU) | F,Xn |
| Risk statements (R) | 11-21/22-37/38-41 |
| Safety statements (S) | 26-36/37-39 |
| Anion traces | chloride (Cl-): ≤200 mg/kgphosphate (PO43-): ≤1 mg/kg |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
| Description | anionic |
|---|---|
| Mol Wt | average mol wt 18,000 |
| Transition Temp | cloud point >100 °C |
| Uv Absorption | λ: 260 nm Amax: 0.04λ: 280 nm Amax: 0.02 |
| Aggregation Number | 62 |
| Cmc | 7-10 mM(20-25°C) |
| Hlb | 40 |
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 Sodium dodecyl sulfate used for?
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Sodium dodecyl sulfate (SDS) is primarily used as an anionic detergent and surfactant. It is critical in biochemical laboratories for electrophoresis (SDS-PAGE), protein solubilisation, and cell lysis. Industrially, it functions as a cleaning agent, emulsifier, and foaming agent in various products.
What is the CAS number and chemical formula for Sodium dodecyl sulfate?
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The CAS number for Sodium dodecyl sulfate is 151-21-3, and its chemical formula is CH3(CH2)11OSO3Na.
What grade and purity does Tech Serve Solutions supply for Sodium dodecyl sulfate?
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Tech Serve Solutions supplies Sodium dodecyl sulfate with an assay of ≥95.0%. TSS does not represent this product as USP, BP, EP, or pharmacopoeia grade unless explicitly stated in the product documentation.
How should Sodium dodecyl sulfate be handled safely?
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Sodium dodecyl sulfate (CAS 151-21-3) is classified as Dangerous. It is flammable and harmful if swallowed or inhaled, causes skin irritation, and serious eye damage. Appropriate personal protective equipment, including eyeshields, gloves, and respiratory protection, must be used. Handle in a well-ventilated area away from ignition sources.
Is Sodium dodecyl sulfate a controlled substance?
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Based on the provided data, Sodium dodecyl sulfate (CAS 151-21-3) is not indicated as a controlled or scheduled substance.
How is Sodium dodecyl sulfate packed and exported by TSS?
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Tech Serve Solutions supplies Sodium dodecyl sulfate in various pack sizes suitable for laboratory and industrial use, adhering to all necessary regulations for safe packing and international export. Please contact us for specific packaging and shipping details.
How can I request a sample or quote for Sodium dodecyl sulfate?
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To request a sample or a quote for Sodium dodecyl sulfate (CAS 151-21-3), please navigate to the product page and utilise the 'Request Sample' or 'Enquire Now' buttons, or contact our sales team directly with your requirements.
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