Merck
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75746

Sigma-Aldrich

Sodium dodecyl sulfate

≥99.0% (GC), dust-free pellets

Synonym(s):
Dodecyl sodium sulfate, Dodecyl sulfate sodium salt, Lauryl sulfate sodium salt, SDS, Sodium lauryl sulfate
Linear Formula:
CH3(CH2)11OSO3Na
CAS Number:
Molecular Weight:
288.38
Beilstein:
3599286
EC Number:
MDL number:
eCl@ss:
39093306
PubChem Substance ID:
NACRES:
NA.25

description

anionic

Quality Level

assay

≥99.0% (GC)

form

rod

mol wt

average mol wt 18,000

aggregation number

62

loss

≤5% loss on drying

CMC

7-10 (lit.)

mp

204-207 °C (lit.)

transition temp

cloud point >100 °C(lit.)

solubility

H2O: soluble 0.29 gm in 10ml, clear, colorless
H2O: 0.1 M at 20 °C, clear, colorless

anion traces

chloride (Cl-): ≤200 mg/kg

cation traces

Ca: ≤25 mg/kg
Cd: ≤5 mg/kg
Co: ≤5 mg/kg
Cr: ≤5 mg/kg
Cu: ≤5 mg/kg
Fe: ≤10 mg/kg
K: ≤200 mg/kg
Mg: ≤20 mg/kg
Mn: ≤5 mg/kg
Ni: ≤5 mg/kg
Pb: ≤5 mg/kg
Zn: ≤5 mg/kg

HLB

40(lit.)

SMILES string

[Na+].CCCCCCCCCCCCOS([O-])(=O)=O

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

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General description

Sodium dodecyl sulfate (SDS) is an ionic detergent, which contains a polar sulfate head group and a hydrophobic 12-carbon chain.

Application

Sodium dodecyl sulfate (SDS) has been used:
  • as a negatively charged surfactant to study its effects on filtration flux and membrane fouling during the microfiltration of the surfactant-stabilized oil emulsion
  • as a component of plant extraction buffer, and transferring buffer for western blot
  • as a component of 5× Laemmli sample buffer (5× LB) and 10× SDS running buffer for sodium dodecyl-sulfate polyacrylamide gel electrophoresis (SDS-PAGE) and immunoblot

Anionic detergent

Biochem/physiol Actions

Sodium dodecyl sulfate (SDS) effectively binds to the positively charged and the hydrophobic residues of proteins via sulfate groups and alkyl chains. It functions as a vital detergent in the domain of structural biology and protein folding/unfolding studies. SDS can stimulate the creation of α-helices in a protein structure. It has the ability to promote cooperative unfolding in several proteins including bovine serum albumin (BSA), β-lactoglobulin, α-lactalbumin, and hen egg-white lysozyme structures at elevated concentrations. 

Pictograms

CorrosionExclamation mark

Signal Word

Danger

Hazard Statements

Hazard Classifications

Acute Tox. 4 Oral - Aquatic Chronic 3 - Eye Dam. 1 - Skin Irrit. 2

Storage Class Code

11 - Combustible Solids

WGK

WGK 2

Flash Point(F)

338.0 °F

Flash Point(C)

170 °C

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

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Certificate of Origin

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