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Other names: Sodium Lauryl Sulfate (SLS or K12); sodium dodecyl sulfate (SDS); sodium dodecyl sulphate (SDS)
CAS number: 151-21-3
Molecular formula: CH3(CH2)nOSO3Na, n=11,13
Characteristics:
Sodium lauryl sulfate (sodium dodecyl sulphate) is a kind of anionic surfactant, dissolves in the water easily, compatibility with anion and non-ionic, good performances on emulsifying, foaming, osmosis, detergency and de-centrality.
Specification:
| Item |
Standard |
| Standard |
GB/T15963-2008 |
| Appearance |
White powder |
White needle |
| Active ingredient (%, ≥) |
92 |
93 |
95 |
92 |
93 |
95 |
| Petroleum ether soluble substances (%, ≤) |
1.5 |
1.5 |
1.2 |
1.5 |
1.5 |
1.5 |
| Inorganic salts (NaCl+Na2SO4) (%, ≤) |
5.5 |
4.5 |
2.5 |
4.5 |
3.5 |
2.0 |
| Water (%, ≤) |
2.5 |
2.5 |
2.0 |
3.5 |
3.5 |
3.0 |
| pH (1% aq. solution) |
7.5-9.5 |
7.5-9.5 |
8.0-9.5 |
7.5-9.5 |
7.5-9.5 |
7.5-9.5 |
| Whiteness (WG, ≥) |
90 |
90 |
90 |
90 |
90 |
90 |
| Item |
High Purity |
| Chemical Grade |
Analytical Reagent Grade |
| Appearance |
White or light yellow, powder or crystalline |
| Active ingredient (%, ≥) |
97 |
98 |
99 |
| Petroleum ether soluble substances (%, ≤) |
0.5 |
0.5 |
0.5 |
| Sodium sulfate (Na2SO4) (%, ≤) |
1.5 |
1.0 |
0.5 |
| Sodium chloride (NaCl) (%, ≤) |
0.05 |
0.05 |
0.05 |
| Water (%, ≤) |
2.0 |
2.0 |
1.0 |
| pH (1% aq. solution) |
6.0-9.5 |
6.5-10.5 |
6.0-7.5 |
| Whiteness (WG, ≥) |
90 |
90 |
90 |
| Fraction content (%, GC, ≥) |
- |
- |
99.5 |
| Phosphorus (P) (ppm, ≤) |
- |
- |
1 |
| Pb (ppm, ≤) |
- |
- |
2 |
| Fe (ppm, ≤) |
- |
- |
1 |
| N (ppm, ≤) |
- |
- |
5 |
| As (ppm, ≤) |
- |
- |
0.1 |
Absorbance
(3% aq. solution) |
230nm, ≤ |
- |
- |
0.4 |
| 260nm, ≤ |
- |
- |
0.1 |
| 280nm, ≤ |
- |
- |
0.1 |
| 410nm, ≤ |
- |
- |
0.01 |
| Solubility |
10% aq. solution, ≤ |
- |
- |
Completely dissolved |
| 1% ethanol, ≤ |
- |
- |
Completely dissolved |
| APHA |
20% aq. solution, ≤ |
- |
- |
15 |
| Item |
Toothpaste Grade |
| Powder |
Needle (Grainy) |
| Sensory |
| Appearance |
White or light yellow |
| Physicochemical |
| Active ingredient (%, ≥) |
95 |
95 |
| Petroleum ether soluble substances (%, ≤) |
1.5 |
1.5 |
| Sodium sulfate (Na2SO4) (%, ≤) |
2.5 |
2.5 |
| Sodium chloride (NaCl) (%, ≤) |
0.1 |
0.1 |
| Water (%, ≤) |
2.0 |
3.0 |
| pH (1% aq. solution) |
8-9.5 |
7.5-10 |
| Whiteness (WG, ≥) |
90 |
90 |
| Frothing Volume (mm, ≥) |
135 |
135 |
| Impurity |
| Heavy metal (as Pb) (mg/kg, ≤) |
15 |
15 |
| Arsenic (As) (mg/kg, ≤) |
2 |
2 |
| Microbiological |
| Total plate count (CFU/g, ≤) |
100 |
100 |
| Mycete and yeast (CFU/g, ≤) |
100 |
100 |
| Kind of coliform bacteria |
Negative |
Negative |
| Pseudomonas aeruginosa |
Negative |
Negative |
| Staphylococcus aureus |
Negative |
Negative |
Packing:
In 20 kg net woven bags or craft-paper bags.
Use:
- Detergency: tooth paste, shampoo, cosmetic, detergent, etc.
- Construction: plasterboard, additive of concrete, coating, etc.
- Pharmaceutical: Medicine, pesticide, etc.
- Leather: leather soft agent, wool cleaning agent, etc.
- Paper making: penetrant, flocculating agent, deinking agent, etc.
- Auxiliaries: textile auxiliaries, plastic auxiliaries, etc.
- Fire fighting: oil well fire fighting, fire fighting device, etc.
- Mineral choosing: mine flotation, coal water mixture, etc.
MSDS: Available when required. |
