8.22050

Sodium dodecyl sulfate

for synthesis

• Synonym(s): Dodecyl sulfate sodium salt, Lauryl sulfate sodium salt, SDS, Dodecyl sodium sulfate
• Empirical Formula (Hill Notation): C₁₂H₂₅NaO₄S
• CAS Number: 151-21-3
• Molecular Weight: 288.38
• MDL number: MFCD00036175
• UNSPSC Code: 12352107
• EC Index Number: 205-788-1

Properties

• Quality Level: 200
• form: powder
• potency: 1427 mg/kg LD₅₀, oral (Rat); >2000 mg/kg LD₅₀, skin (Rabbit)
• pH: 6-9 (20 °C, 10 g/L in H₂O)
• mp: 204-207 °C
• transition temp: flash point >150 °C
• solubility: >130 g/L
• density: 1.1 g/cm³ at 20 °C
• bulk density: 490‑560 kg/m³
• storage temp.: 2-30°C
• InChI: 1S/C12H26O4S.Na/c1-2-3-4-5-6-7-8-9-10-11-12-16-17(13,14)15;/h2-12H2,1H3,(H,13,14,15);/q;+1/p-1
• InChI key: DBMJMQXJHONAFJ-UHFFFAOYSA-M

Description

General description

Sodium dodecyl sulfate (SDS) is a conventional anionic surfactant. An amphiphilic surfactant consists of polar hydrophilic head groups and non-polar hydrophobic tail groups. Surfactants are characterized by their ability to form micelles, i.e., their ability to self-aggregate above a critical micelle concentration (CMC). Due to its amphiphilic nature, the surfactant is used as a detergent in industries. They are useful for cleaning, wetting, dispersing, emulsifying, foaming, and antifoaming.

Application

Sodium dodecyl sulfate used as a surfactant:

• In the synthesis of SiO₂/polystyrene nanocomposite particles by miniemulsion polymerization.
• In the preparation of solid lipid NPs (SLNs) and poly(lactide-co-glycolide) NPs containing OA-Fe₃O₄ as CANs (composite antistatic NPs).

Analysis Note

Assay (Epton titration): ≥ 95.0 %
Identity (IR): passes test

Safety Information

• Pictograms: GHS02,GHS05,GHS07
• Signal Word: Danger
• Hazard Statements: H228 - H302 + H332 - H315 - H318 - H335 - H412
• Precautionary Statements: P210 - P273 - P280 - P301 + P312 - P304 + P340 + P312 - P305 + P351 + P338
• Hazard Classifications: Acute Tox. 4 Inhalation - Acute Tox. 4 Oral - Aquatic Chronic 3 - Eye Dam. 1 - Flam. Sol. 2 - Skin Irrit. 2 - STOT SE 3
• Target Organs: Respiratory system
• Storage Class Code: 4.1B - Flammable solid hazardous materials
• WGK: WGK 2
• Flash Point(F): 338.0 °F
• Flash Point(C): 170 °C