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151-21-3

151-21-3 structural image
Product Name: Sodium dodecyl sulfate
Formula: C12H25NaO4S
Synonyms: SDS;Sodium lauryl sulfate;Dodecyl sodium sulfate;Dodecyl sulfate sodium salt;Lauryl sulfate sodium salt
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CHEMICAL AND PHYSICAL PROPERTIES

Physical Description Dodecyl sulfate, [sodium salt] appears as white to pale yellow paste or liquid with a mild odor. Sinks and mixes with water. (USCG, 1999)
Color/Form White or cream-colored crystals, flakes, or powder
Odor Faint odor of fatty substances
Melting Point 399 to 405 °F (NTP, 1992)
Solubility less than 1 mg/mL at 66 °F (NTP, 1992)
Density greater than 1.1 at 68 °F (USCG, 1999)
LogP 1.6
Stability/Shelf Life Stable under recommended storage conditions.
Decomposition When heated to decomposition it emits toxic fumes of /sulfur oxides and sodium oxides/.
Surface Tension 39.5 dyn/cm at 25 °C
Other Experimental Properties Lowers the surface tension of aqueous solutions; emulsifies fats
Chemical Classes Other Uses -> Emulsifiers/Surfactants

SAFETY INFORMATION

Signal word Danger
Pictogram(s)

Corrosion
Corrosives
GHS05

Exclamation Mark
Irritant
GHS07
GHS Hazard Statements H302:Acute toxicity,oral
H315:Skin corrosion/irritation
H318:Serious eye damage/eye irritation
H412:Hazardous to the aquatic environment, long-term hazard
Precautionary Statement Codes P264:Wash hands thoroughly after handling.
P264:Wash skin thouroughly after handling.
P273:Avoid release to the environment.
P280:Wear protective gloves/protective clothing/eye protection/face protection.
P301+P312:IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.
P302+P352:IF ON SKIN: wash with plenty of soap and water.
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

Molecular Weight 288.38 g/mol
Hydrogen Bond Donor Count 0
Hydrogen Bond Acceptor Count 4
Rotatable Bond Count 12
Exact Mass 288.13712473 g/mol
Monoisotopic Mass 288.13712473 g/mol
Topological Polar Surface Area 74.8 Ų
Heavy Atom Count 18
Formal Charge 0
Complexity 249
Isotope Atom Count 0
Defined Atom Stereocenter Count 0
Undefined Atom Stereocenter Count 0
Defined Bond Stereocenter Count 0
Undefined Bond Stereocenter Count 0
Covalently-Bonded Unit Count 2
Compound Is Canonicalized Yes

PRODUCT INTRODUCTION

description

Sodium dodecyl sulfate (SDS) is an anionic surfactant. It is mainly used as a detergent, emulsifier and protein denaturant in various industrial processes, especially in the production of personal care products, detergents and laboratory reagents. SDS is amphiphilic and interacts with both hydrophobic and hydrophilic molecules, which helps to reduce the surface tension and enhances the cleaning ability, making it a multifunctional detergent. SDS is also an indispensable tool in the extraction and purification of proteins. By disrupting the protein structure, SDS facilitates the separation of proteins according to their molecular weight during SDS-PAGE electrophoresis.

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