1072-24-8

Basic information

• Product Name: SODIUM N-UNDECYL SULPHATE
• Synonyms: SODIUM N-UNDECYL SULFATE;SODIUM N-UNDECYL SULPHATE;UNDECYL SODIUM SULFATE;sodium undecyl sulphate;Natriumundecylsulfat;Sodium 1-undecyl sulfate, 99%(dry wt.), water ;Sulfuric acid sodium=undecyl ester salt;Sulfuric acid undecyl=sodium salt
• CAS NO: 1072-24-8
• Molecular Formula: C₁₁H₂₃O₄S*Na
• Molecular Weight: 274.35
• EINECS: 214-004-7
• Mol File: 1072-24-8.mol
• Article Data: 2

Chemical Properties

• Melting Point: 208-210°C
• Boiling Point: °Cat760mmHg
• Flash Point: °C
• Appearance: /
• Density: 1.073g/cm³
• Water Solubility: Soluble in water.
• CAS DataBase Reference: SODIUM N-UNDECYL SULPHATE(CAS DataBase Reference)
• NIST Chemistry Reference: SODIUM N-UNDECYL SULPHATE(1072-24-8)
• EPA Substance Registry System: SODIUM N-UNDECYL SULPHATE(1072-24-8)

Safety Data

• Statements: R36/37/38:Irritating to eyes, respiratory system and skin.
• Safety Statements: S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.; S36:Wear suitable prot
• Hazardous Substances Data: 1072-24-8(Hazardous Substances Data)

Usage

General Description

Sodium N-undecyl sulphate is an anionic surfactant that is commonly used in personal care and household products. It is derived from the fatty alcohol undecanol and sulfuric acid, and has a smooth, creamy texture. As a surfactant, it helps to reduce the surface tension of liquids, allowing them to spread and penetrate more easily. This makes it a common ingredient in shampoos, body washes, and other cleansing products, where it helps to create a lather and effectively remove dirt and oil from the skin and hair. Additionally, it has antimicrobial properties, making it useful for preserving the shelf life of products and inhibiting the growth of harmful bacteria. However, it is important to note that sodium N-undecyl sulphate can be irritating to the skin and eyes in high concentrations, and should be used in moderation.

InChI:InChI=1/C11H24O4S.Na/c1-2-3-4-5-6-7-8-9-10-11-15-16(12,13)14;/h2-11H2,1H3,(H,12,13,14);/q;+1/p-1

Upstream product

• 112-42-5 undecyl alcohol 

Relevant articles and documents

Influence of Chain Length on the Sphere-to-Rod Transition in Alkyl Sulfate Micelles

Using Quasielastic light scattering spectroscopy (QLS) we have deduced the mean hydrodynamic radius (Rh) of alkyl sulfate micelles as functions of chain length (number of carbons nc = 8-16), temperature (0-85 deg C), detergent concentration (0.01-4g/dL), and NaCl concentration (0.1-2 M).In the region of low chain length (nc h values (extrapolated to the cmc) increase approximately linearly with the chain length.These results combained with Huisman's aggregation numbers (nw(cmc)) are consistent with a micellar shape that is close to spherical (axial ratio less than 2).Under conditions of high NaCl concentrations of high NaCl concentration the micelles exhibit a temperature-dependent growth from small spherical aggregates into long spherocylindrical micelles at concentrations above the cmc.With increasing chain length the temperature dependence of Rh becomes stronger and the NaCl and detergent concentrations needed for micellar growth become smaller.Light scattering intensity measurements confirm a rodlike growth for these micelles at all chain lengths.From these Rh measurements, values of the thermodynamic parameter K governing the sphere-to-rod transition are determined by using an extension of our previous thermodynamic model (Missel et al., J.Phys.Chem., 84, 1044 (1980)).A quantitative analysis of the dependence of K on chain length, temperature, and NaCl concentration provides new insights into energetic factors which govern the structure and growth of micelles.