Product name: Sodium Dodecyl Sulfate (SDS / K12)
CAS No.：151-21-3
EINECS No.：205-788-1
Synonyms：Sodium Lauryl Sulfate, Dodecyl Sodium Sulfate, Lauryl Sulfate Sodium Salt, K12
INCI Name：Sodium Lauryl Sulfate
Molecular Formula：C₁₂H₂₅NaO₄S
Molecular Weight：288.38
1. Chemphysical Properties
Appearance White or pale yellow powder / needle crystal
Odor Slight characteristic odor
Melting Point 180~185 ℃ (decompose)
pH (1% aqueous solution, 25℃) 7.5 ~ 9.5
Solubility Freely soluble in water; slightly soluble in ethanol; insoluble in ether, hydrocarbons
Density ~1.1 g/cm³
Flash Point >100 ℃
2. Quality Specification (Industrial / Cosmetic Grade)
| Item | Powder/Needle 92% | Powder/Needle 93% | Powder/Needle 95% | Liquid 28% | Liquid 35% |
|---|---|---|---|---|---|
| Appearance | Powder/Needle | Powder/Needle | Powder/Needle | Liquid | Liquid |
| Active ingredient (%) ≥ | 92 | 93 | 95 | 28 | 35 |
| Petroleum ether soluble matter (%) ≤ | 1.5 | 1.5 | 1.5 | 0.5 | 0.3 |
| Inorganic salts (NaCl+Na₂SO₄) (%) ≤ | 5.5 | 4.5 | 2.5 | 2.0 | 2.0 |
| Water (%) ≤ | 2.5 | 2.5 | 2.5 | - | - |
| pH (1% aq. Solution, 25℃) | 7.5–9.5 | 7.5–9.5 | 7.5–9.5 | 7.5–9.5 | 7.5–9.5 |
| Whiteness (WG) ≥ | 90 | 90 | 90 | - | - |
| Color (Hazen, 5% a.m solu) ≤ | - | - | - | 50 | 50 |
3. Application & Use
Daily chemicals: Foaming agent, detergent for shampoo, body wash, hand sanitizer, toothpaste
Industrial field: Emulsifier, foamer, wetting agent for textile, electroplating, fire fighting foam
Biochemical: Protein denaturant for SDS-PAGE electrophoresis, lab reagent
Pesticide & coating: Emulsifier and dispersant
4. Packing
25kg woven bag with PE inner liner, 16MT/20"FCL
5. Storage & Transportation
Storage: Keep sealed in cool, dry and ventilated warehouse, avoid moisture.
Transportation: Ordinary chemical, not dangerous goods. Avoid mixing with strong oxidants and acids.
Disclaimer: All data above are typical values for reference only, not contract specifications. Final standard shall be subject to batch COA.
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