Sodium lauroylsarcosinate

Product Details

CasNo： 137-16-6

MF： C15H28NNaO3

Appearance： liquid

Delivery Time： 15 days

Packing： 200kg/drum

Purity： 99%

1. Basic Information

• Chemical Name: Sodium Lauroyl Sarcosinate (Sodium Dodecanoyl Sarcosinate)
• English Name: Sodium Lauroyl Sarcosinate
• CAS Number: 137-16-6
• Molecular Formula: C15​H28​NNaO3​
• Molecular Weight: 293.38
• Common Synonyms: SLS (in specific scenarios, must be distinguished from Sodium Lauryl Sulfate); Sodium N-dodecanoyl-N-methylglycinate; Sodium Lauroylsarcosinate

2. Appearance and Properties

• Pure products appear as white to slightly yellow powders or granules; some industrial-grade liquid products (e.g., 30% concentration aqueous solution) are colorless to pale yellow transparent liquids.
• It has no obvious odor. Powdered products have weak hygroscopicity (superior to Sodium Lauryl Sulfate), are not prone to caking during storage, and form a clear, precipitate-free solution after dissolution.

3. Core Physical and Chemical Properties

4. Key Performance Characteristics

1. Ultra-Mild & Low Irritation: Its molecular structure contains a "sarcosine" group (-N(CH₃)CH₂COOH), which reduces damage to the skin barrier. According to skin irritation tests (e.g., human patch tests), its irritation is only 1/5–1/3 that of Sodium Lauryl Sulfate (SLS), making it suitable for sensitive skin and baby care products.
2. Balanced Cleansing Power & Mildness: Despite low irritation, it still has excellent oil-emulsifying ability, effectively removing surface oil, sweat, and mild dirt from the skin. It leaves no tightness after washing, making it ideal for facial cleansers, body washes, and hair care products.
3. Excellent Compatibility: It can be compounded with anionic (e.g., SLES), nonionic (e.g., cocamide DEA), and amphoteric (e.g., cocamidopropyl betaine) surfactants. This not only synergistically improves foam fineness but also further reduces the irritation of the compound system.
4. Good Biocompatibility: Easily biodegradable (BOD5/CODcr ≈ 0.7) with no toxic residues after degradation, it is friendly to the water environment and meets the EU "ECOCERT" standard.
5. Auxiliary Skincare Benefits: Some studies show that its molecules can slightly soften cuticles, aiding the absorption of subsequent skincare products. Meanwhile, it has minimal impact on beneficial bacteria on the skin surface, maintaining the skin’s microecological balance.

5. Application Fields

• Personal Care Field:
  • Facial Cleansers: Amino acid facial cleansers, sensitive-skin facial creams (used as a core cleansing ingredient to replace highly irritating surfactants).
  • Body Washes: Baby body washes, sensitive-skin body lotions (moisturizing and non-drying after washing).
  • Hair Care Products: Silicone-free shampoos, scalp care serums (cleanses the scalp while reducing follicle irritation).
  • Oral Care: Mild toothpaste (reduces irritation to gums and oral mucosa, avoiding "post-brushing stinging").
• Industrial & Pharmaceutical Fields:
  • Metal Processing: Low-irritation metal cleaners (used for degreasing the surface of precision instruments without corrosion).
  • Pharmaceutical Formulations: Solubilizers for medicinal ointments and oral liquids (improves drug solubility without additional irritation to the human body).
  • Textile Industry: Fabric softening cleaners (cleans while protecting fibers and reducing fabric pilling).

6. Safety Instructions

1. Skin Safety: Non-sensitizing and non-acne-causing (rated "0" on the comedogenic scale). It is listed as a "safe surfactant" by the FDA and EU CosIng and can be used in food-contact products (e.g., oral care).
2. Eye Irritation: Only causes slight foreign body sensation if accidentally entered the eyes, with no obvious stinging. It can be quickly relieved by rinsing with water, outperforming most anionic surfactants.
3. Environmental Safety: High biodegradation rate, no accumulation in water or soil, and extremely low toxicity to aquatic organisms (e.g., fish, algae) (LC50 ＞ 100mg/L).
4. Usage Recommendations: The addition amount in personal care products is usually 2%–8% (powder grade); for liquid products (30% concentration), the addition amount can be adjusted to 5%–15%. When compounding, it is recommended to pair with moisturizing ingredients (e.g., panthenol, hyaluronic acid) to further improve skin feel.

7. Packaging and Storage

• Packaging Forms:
  • Small Sizes (100g, 500g, 1kg): Aluminum foil sealed bags or HDPE plastic bottles (for powder); PET plastic bottles (for liquid) — suitable for laboratory R&D and small-batch trials.
  • Industrial Sizes (25kg, 50kg): Kraft paper bags or cardboard drums lined with polyethylene film (for powder); 200kg HDPE plastic drums (for liquid) — moisture-proof and easy to transport.
  • Bulk Packaging (500kg, 1000kg): Ton bags (for powder, with moisture-proof inner liners); IBC tanks (for liquid) — suitable for large-scale industrial procurement.
• Storage Conditions:
  • Store in a cool, dry place (temperature 5–30°C, relative humidity ＜ 70%). Powdered products should be sealed to prevent moisture absorption; liquid products should be protected from direct sunlight.
  • Keep away from strong acids (e.g., hydrochloric acid) and strong oxidants (e.g., potassium permanganate) to avoid product decomposition.
  • Shelf Life: 36 months for powdered products and 24 months for liquid products in unopened condition; use within 6 months after opening.