Quick Search
Sodium Lauryl Sulfate Powder is an anionic surfactant, and is a typical representative of sulphate-based surfactant.
Sodium Lauryl Sulfate Powder is abbreviated as SDS, and also known as AS, K12, coco alcohol sulfate, sodium lauryl sulfate and foaming agent.
The commercial products are usually white to light yellow crystalline powder.
CAS: 151-21-3
MF: C12H26O4S.Na
MW: 289.39
EINECS: 205-788-1
Synonyms
LAURYL SULFATE SODIUM SALT;LAURYL SODIUM SULFATE;LAURYL SULFATE, SODIUM;LAURYL SULFATE NA-SALT;IPC-SDS;DODECYLSULFURIC ACID SODIUM SALT;DODECYL SULFATE SODIUM;DODECYL SULFATE SODIUM SALT
Sodium Lauryl Sulfate Powder is non-toxic, slightly soluble in alcohol, insoluble in chloroform and ether, soluble in water, and has good anionic and nonionic complex compatibility.
Sodium Lauryl Sulfate Powder has good emulsibility, foamability, and foaming, infiltrating, decontaminating and dispersing properties.
Sodium Lauryl Sulfate Powder is abundant in foams and quickly biodegradable, and has solubility next only to fatty alcohol polyoxyethylene ether sodium sulphate (abbreviated as AES).
Sodium Lauryl Sulfate Powder is not sensitive to alkali and hard water, but its stability is inferior to general sulfonate under acidic conditions and is close to AES.
Sodium Lauryl Sulfate Powder is not favorable to exceed 95 °C upon long-term heating, and its irritation is at the middle level among surfactants, with an irritation index of 3.3 for a 10% solution, which is higher than AES and lower than sodium dodecyl benzene sulfonate (abbreviated as LAS).
Toxicity LD50 is 1300mg/kg.
There is no evidence that Sodium Lauryl Sulfate Powder is carcinogenic, but high doses may indeed irritate the skin.
However, in general sanitary products the concentration is limited when used as a forming agent, and is in line with national standards.
So there is no need to concern.
Sodium Lauryl Sulfate Powder is a major component of detergent.
Sodium Lauryl Sulfate Powder is usually used in the DNA extraction process to separate DNA after protein denaturation.
Sodium Lauryl Sulfate Powder is often misread as sodium dodecyl sulfonate.
Sodium Lauryl Sulfate Powder is widely used as a foaming agent in toothpaste, soap, shower gel, shampoo, detergent and cosmetics.
95% of personal care products and household cleaning products contain sodium lauryl sulfate.
Sodium Lauryl Sulfate Powder is an organic sodium salt that is the sodium salt of dodecyl hydrogen sulfate.
Sodium Lauryl Sulfate Powder has a role as a detergent and a protein denaturant.
v contains a dodecyl sulfate.
White to pale yellow paste or liquid with a mild odor.
Sinks and mixes with water.
This anionic detergent is widely used in cosmetics and industry.
As a skin irritant agent, Sodium Lauryl Sulfate Powder can be used in several dermatological applications.
Sodium Lauryl Sulfate Powder is also a good indicator of excited skin during patch testing.
Sodium Lauryl Sulfate Powder Chemical Properties
Melting point: 204-207 °C (lit.)
Density: 1.03 g/mL at 20 °C
Bulk density: 490-560kg/m3
FEMA: 4437 | SODIUM LAURYL SULFATE
Fp: >100°C
Storage temp.: 2-8°C
Solubility H2O: 0.1 M, clear to nearly clear, colorless to slightly yellow
Form: Powder or Crystals
Color: White to pale yellow
Odor: Slight fatty odour
PH Range: 7.2
PH: 6-9 (10g/l, H2O, 20℃)
Biological source: synthetic (oragnic)
Water Solubility: ca. 150 g/L (20 ºC)
λmax λ: 260 nm Amax: 0.3
λ: 280 nm Amax: 0.2
Merck: 14,8636
BRN: 3599286
InChIKey: DBMJMQXJHONAFJ-UHFFFAOYSA-M
LogP: 1.600
CAS DataBase Reference: 151-21-3(CAS DataBase Reference)
EPA Substance Registry System: Sodium Lauryl Sulfate Powder (151-21-3)
Absorption: ≤0.1 at 280nm in water at 30mg/mL
Sodium Lauryl Sulfate Powder consists of white or cream to pale yellow coloured crystals, flakes, or powder having a smooth feel, a soapy, bitter taste, and a faint odor of fatty substances.
Sodium Lauryl Sulfate Powder is easily soluble in water.
Uses
Sodium Lauryl Sulfate Powder is an emulsifier and whipping aid that has a solubility of 1 g in 10 ml of water.
Sodium Lauryl Sulfate Powder functions as an emulsifier in egg whites.
Sodium Lauryl Sulfate Powder is used as a whipping aid in marshmallows and angel food cake mix.
Sodium Lauryl Sulfate Powder also functions to aid in dissolving fumaric acid.
Wetting agent, detergent, especially in the textile industry.
Electrophoretic separation of proteins and lipids.
Ingredient of toothpastes.
Sodium Lauryl Sulfate Powder has excellent detergency, emulsification and foaming power, can be used as detergents and textile auxiliaries, and is also used as an anionic surfactant, toothpaste foaming agent, mine fire extinguishing agents, foaming agents for fire extinguishers, emulsion polymerization emulsifiers, emulsifying and dispersing agents for medical use, shampoo and other cosmetic products, wool detergent, detergent for silky class fine fabrics and flotation agent for metal beneficiation.
Sodium Lauryl Sulfate Powder stipulates as processing aids for food industry.
Sodium Lauryl Sulfate Powder used as foaming agents; emulsifying agents; and anionic surfactants.
Sodium Lauryl Sulfate Powder is used for cakes, drinks, proteins, fruits, fruit juice, and edible oil, and so on.
Sodium Lauryl Sulfate Powder is used as surfactants, detergents, foaming agents, and wetting agents, and so on.
Sodium Lauryl Sulfate Powder is used as relatively low-level ion-pairing reagents, and is cheaper than sodium heptanesulfonate and sodium pentanesulfonate when less demanding.
Sodium Lauryl Sulfate Powder is used as raw material for modifying materials.
Sodium Lauryl Sulfate Powder is used as additives in capillary electrophoresis analysis and is generally used as molar solution.
Sodium Lauryl Sulfate Powder is also used in other analysis such as flow column analysis.
Pharmaceutical Applications
Sodium Lauryl Sulfate Powder is an anionic surfactant employed in a wide range of nonparenteral pharmaceutical formulations and cosmetics.
Sodium Lauryl Sulfate Powder is a detergent and wetting agent effective in both alkaline and acidic conditions.
In recent years it has found application in analytical electrophoretic techniques: Sodium Lauryl Sulfate Powder (sodium dodecyl sulfate) polyacrylamide gel electrophoresis is one of the more widely used techniques for the analysis of proteins; and sodium lauryl sulfate has been used to enhance the selectivity of micellar electrokinetic chromatography (MEKC).
Preparation
Sodium Lauryl Sulfate Powder can be synthesized by reacting dodecyl alcohol with sulfur trioxide gas, followed by neutralization with sodium hydroxide.
The preparation of Sodium Lauryl Sulfate Powder involves the following steps: The reaction takes place in a vertical reactor at 32 °C.
Nitrogen gas is introduced through the gas vents at a flow rate of 85.9 L/min.
Sodium Lauryl Sulfate Powder is added at a flow rate of 58 g/min at 82.7 kPa.
Liquid sulfur trioxide is fed into the flash evaporator at 124.1 kPa, with a flow rate of 0.9072 kg/h and a flash temperature of 100 °C.
The sulfated product is quickly cooled to 50 °C, aged for 10-20 min, then neutralized with a base in a neutralization kettle controlled at 50 °C.
The pH is adjusted to 7-8.5, and the liquid product is spray dried to obtain a solid product.
Production Methods
Sodium Lauryl Sulfate Powder is prepared by sulfation of lauryl alcohol, followed by neutralization with sodium carbonate.
Reactivity Profile
Sodium Lauryl Sulfate Powder is incompatible with strong oxidizers.
Sodium dodecyl sulfate is also incompatible with cationic materials and with acids with pH below 2.5.
Salts, basic, such as Sodium Lauryl Sulfate Powder, are generally soluble in water.
The resulting solutions contain moderate concentrations of hydroxide ions and have pH's greater than 7.0.
They react as bases to neutralize acids.
These neutralizations generate heat, but less or far less than is generated by neutralization of the bases in reactivity group 10 (Bases) and the neutralization of amines.
They usually do not react as either oxidizing agents or reducing agents but such behavior is not impossible.
Biochem/physiol Actions
Sodium Lauryl Sulfate Powder helps to quickly disrupt the biological membranes.
Sodium Lauryl Sulfate Powderis usually used as one of the major constituent of several reagents, that are used to purify nucleic acids.
Sodium Lauryl Sulfate Powder can block the activity of RNase and deoxyribonuclease (DNase).
