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Sodium Dodecyl Sulphate

Sodium Dodecyl Sulphate

RX Marine International is thhe largest supplier of Sodium Dodecyl Sulphate in the whole of Indian & Middle Eastern Terrain.

We have a ready stock of SLS at Kandala, Mumbai, Ennore, Vishakhapatnam, Haldia, Fujairah and Oman

Sodium Dodecyl Sulfate is an Anionic detergent and surfactant found in many personal care products soaps, shampoos, toothpaste etc.. Very effective foaming agent. We are Manufacturing in INDIA and  exporting to global market, Our name is also known as best UAE supplier of sodium dodecyl sulfate in all Middle East country.

Our products  are supplying  maximum UAE manufacturers & Trader suppliers. Choose quality sodium dodecyl sulfate with Competitive price available in INDIA and UAE ( Middle East, Gulf )

Sodium Dodecyl Sulfate (SDS)
Other Name: Sodium Dodecyl Sulfate
INCI name: Sodium Dodecyl Sulfate
CAS No.: 151-21-3
EINECS (EC) No.: 205-788-1
Molecular Formula: ROSO3Na   R: C12-14 alkyl

Excellent decontamination, emulsification, and foaming property. With rich and longstanding foam. 
Non-toxic and good biodegradable ability.
By adding other types of additive, its irritation will be ameliorated, degreasing power reduced, hand feeling enhanced.


Sodium dodecyl sulfate is an organic sodium salt that is the sodium salt of dodecyl hydrogen sulfate. It has a role as a detergent and a protein denaturant. It contains a dodecyl sulfate.

Dodecyl sulfate, sodium salt appears as white to pale yellow paste or liquid with a mild odor. Sinks and mixes with water. 
Properties of SDS (values for pure C12):
• Molecular Weight: 288.5g
• Detergent Class: Ionic (anionic)
Specifications for Sodium Dodecyl Sulfate:
• Chain length: C12 >60%; C14 = 20 to 35%; C16 <10%; C10 and C18 <1% each

Sodium Dodecyl Sulfate 
Sulfuric acid monododecyl ester sodium salt.

Sodium monododecyl sulfate

Sodium Dodecyl Sulfate is a mixture of sodium alkyl sulfates consisting chiefly of sodium dodecyl sulfate [CH3(CH2)10CH2OSO3Na]. The combined content of sodium chloride and sodium sulfate is not more than 8.0 percent. It contains not less than 85.0% of sodium alkyl sulfates calculated as C12H25NaO4S.

A: Place 2.5 g in a silica or platinum crucible, and add 2 mL of 10 N sulfuric acid. Heat on a water bath, then cautiously raise the temperature progressively over an open flame. Ignite, preferably in a muffle furnace, at 600 ± 25 . Continue heating until all black particles have disappeared. Cool, add a few drops of 2 N sulfuric acid, and heat and ignite as above. Add a few drops of 2 M ammonium carbonate, evaporate to dryness, and ignite as above. Cool, dissolve the residue in 50 mL of water, and mix.

To a 2 mL portion of this solution, add 4 mL of Potassium pyroantimonate solution. If necessary, rub the inside of the test tube with a glass rod. A white, crystalline precipitate is formed.

B: Prepare a solution (1 in 10) after acidification with hydrochloric acid and boiling for 20 minutes. No precipitate is formed. Add barium chloride solution; a white precipitate is produced.

C: Dissolve 0.1 g in 10 mL of water and shake. A copious foam is formed.

D: To 0.1 mL of the solution prepared for identification C, add 0.1 mL of a 1 g/L solution of methylene blue and 2 mL of dilute sulfuric acid. Add 2 mL of methylene chloride and shake. An intense blue color develops in the methylene chloride layer.

Alkalinity—Dissolve 1.0 g in 100 mL of water, add phenol red solution, and titrate with 0.10 N hydrochloric acid: not more than 0.5 mL is required for neutralisation.

Sodium chloride—Dissolve about 5 g, accurately weighed, in about 50 mL of water.

Neutralize the solution with dilute nitric acid, if necessary, add exactly 5.0 mL of 0.1 N Sodium Chloride and titrate with 0.1 N Silver Nitrate (indicator: 2 drops of fluorescein sodium solution) to the first appearance of turbidity. Perform a blank determination, and make any necessary correction. Each mL of 0.1 N Silver Nitrate = 5.844 mg of NaCl.

Sodium sulcate— Procedure—Transfer about 1 g of Sodium Dodecyl Sulfate, accurately weighed, in 10 mL of water, add 100 mL of alcohol and heat at a temperature just below the boiling point for 2 hours. Filter through a glass filter while hot, and wash with 100 mL of boiling alcohol. Dissolve the precipitate by washing with 150 mL of water, collecting the washings in a beaker. Add 10 mL of dilute hydrochloric acid, heat to boiling, add 25 mL of barium chloride solution and allow to stand overnight. Collect the precipitate and wash with water until the last washing shows no opalescence with 0.1 N Silver Nitrate. Dry the precipitate, ignite to constant mass between 500 and 600 degrees by raising the temperature gradually, and weigh as barium sulfate (BaSO4: 233.39)

Amount (mg) of sodium sulfate (Na2SO4) = amount (mg) of barium sulfate (BaSO4) times 0.6086

Unsulfated alcohols—Dissolve about 10 g, accurately weighed, in 100 mL of water, and add 100 mL of alcohol. Transfer the solution to a separator, and extract with three 50-mL portions of Petroleum Ether. If an emulsion forms, sodium chloride may be added to promote separation of the two layers. Wash the combined Petroleum Ether extracts with three 50-mL portions of water, and dry with anhydrous sodium sulfate. Filter the Petroleum Ether extract into a tared beaker, evaporate on a water bath and dry the residue at 105o for 30 minutes, cool, and weigh. The weight of the residue is not more than 4.0% of the weight of the Sodium Dodecyl Sulfate taken.

Assay—Dissolve 1.5 g of Sodium Dodecyl Sulfate in water, warming if necessary, and dilute to exactly 1000.0 ml with water. To 10.0 ml of the solution add 25 mL Methylene blue solution (0.003 % w/v), 15 ml of methylene chloride and 20 mL of water. Titrate with 0.004 M benzethonium chloride, shaking vigorously and allowing the layers to separate before each addition, until almost the same blue color of the two layers is obtained.

1 ml of 0.004 M benzethonium chloride is equivalent to 1.154 mg of sodium alkyl sulphates, calculated as C12H25NaO4S.

REAGENTS: Potassium pyroantimonate solution—To 2 g of potassium pyroantimonate add 100 mL of water. Boil the solution for about 5 minutes, cool quickly, and add 10 mL of a solution of potassium hydroxide (3 in 20). Allow to stand for 24 hours, and filter.

Barium Chloride solution—Dissolve 12 g of barium chloride in water to make 100 mL.

Dilute Sulfuric Acid—Cautiously add 57 mL of sulfuric acid to about 100 mL of water, cool to room temperature, and dilute with water to 1000 mL.

Phenol Red solution (Phenolsulfonphthalein TS)—Dissolve 100 mg of phenolsulfonphthalein in 100 mL of alcohol, and filter if necessary.

Dilute Nitric Acid (10 percent HNO3) —Dilute 105 mL of nitric acid with water to 1000 mL.

Dilute Hydrochloric Acid (10 percent) —Prepare by mixing 226 mL of hydrochloric acid with sufficient water to make 1000 mL.

Fluorescein sodium solution—Dissolve 0.2 g of fluorescein sodium in water to make 100 mL 

Methylene blue solution—Dissolve 0.003g of methylene blue, 5.0g of anhydrous sodium sulfate and 1.2g of sulfuric acid in 100 mL of water. Anhydrous sodium sulfate is the emulsion breaker. 







Appearance 25`c

White to yellowish powder of needle

White to yellowish powder  to needle

Colorless to yellowish transparent liquid


Characteristic odor

Characteristic  odor

Characteristic  odor

Active matter, %

95.0 min

92.0 max


Petroleum ether soluble substance, %

1.5 max.

1.5 max.

1.5 max.

Sodium sulfate, %

3.0 max.

5.0 max.

1.0 max.

pH value (25`C , 1%


Color, Hazen (

10 max.

10 max.

10 max.

Water content,%

3.0 max.

5.0 max



1. Compounded with LABSA in a proportion of 1:3, it is used as the detergent for heavy dirty to wash carpet, dishware and hard surface.
2. Widely used in shampoo, bubble bath, hand washing, and the lather agent of toothpaste, cream or powder shampoo.
3. In the other industries fields, it can be used as emulsifier, fire retardant, auxiliary agent of textile, and plating additive, etc.


Sodium Dodecyl Sulfate (SLS) 95%

Appearance,25℃: White to yellowish powder or needle
Odor: Characteristic odor
Active matter, %: 95.0 min.
Petroleum ether soluble substance, %: 1.5 max.
Sodium sulfate, %: 3.0 max.
Ph value (25℃, 1% 7.5-9.5
Color, Hazen (5% 10 max.
Water content, %: 3.0 max.

Sodium Dodecyl Sulfate (SDS ) 92%
Appearance,25℃: White to yellowish powder or needle
Odor: Characteristic odor
Active matter, %: 92.0 min.
Petroleum ether soluble substance, %: 1.5 max.
Sodium sulfate, %: 5.0 max.
Ph value (25℃, 1% 7.5-9.5
Color, Hazen (5% 10 max.
Water content, %: 5.0 max.

Sodium Dodecyl Sulfate (SDS ) 30%
Appearance,25℃: White to yellowish powder or needle
Odor: Characteristic odor
Active matter, %: 30±1
Petroleum ether soluble substance, %: 1.5 max.
Sodium sulfate, %: 1.0 max.
Ph value (25℃, 1% 7.5-9.5
Color, Hazen (5% 10 max.
Water content, %: nill






SLS 95 or 92%


525 Bags




400 Bags



SLS 30%

200Kgs/Plastic Drum

80 Drums




18 IBCs




SLS 95% or 92%:
1) 20kg/bag, 10.5mt/fcl (N.W.),10.763mt/fcl (G.W.) without pallet
2) 20kg/bag, 8mt/fcl (N.W.),8.2mt/fcl (G.W.) with pallet SLS 30%:
1) 200kg/plastic drum, 16mt/fcl (N.W.), 16.8mt/fcl (G.W.)
2) 1000kg/IBC, 18mt/fcl (N.W.), 19.152mt/fcl (G.W.)

Storage: Stored in dry, cool and ventilated place, kept away from sunshine and rain.



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