Basic Information of Sodium Lauroyl Aspartate
- Product Name: Sodium Lauroyl Aspartate
- English Aliases: Lauroylaspartic Acid Sodium Salt, Sodium N-Lauroyl-L-aspartate
- Industry Abbreviation: SLAS, Sodium Lauroyl Aspartate
- Molecular Formula: C16H30NNaO5
- Molecular Weight: 339.41 g/mol
- CAS Number: 41489-18-3
- Product Grade: Cosmetic Grade (Mainstream), Food Grade (Oral Care), Industrial Grade (Cleaning Aid)
- Main Uses: Cosmetic surfactant, oral care foaming agent, pharmaceutical auxiliary cleaning agent, industrial mild cleaning aid
Physicochemical Properties of Sodium Lauroyl Aspartate
- Appearance and Odor: Liquid or white to off-white powder or crystals, with no obvious odor or a slight characteristic odor.
- Solubility: Easily soluble in hot water (solubility increases above 60℃), soluble in a mixture of ethanol and propylene glycol, with lower solubility in cold water.
- Boiling Point: Decomposes at 230-240℃ (no definite boiling point; amide bond breaks at high temperatures).
- Melting Point: 158-163℃ (determined by differential scanning calorimetry, DSC peak temperature).
- pH Value (1% aqueous solution): 7.5-8.5 (neutral to slightly alkaline, suitable for skin pH environment).
- Surface Tension: 32-36 mN/m (0.2% aqueous solution, 25℃, determined by the ring method).
- Foam Height: ≥170mm (Roche foam apparatus, 0.2% aqueous solution, 40℃, after 5 minutes).
- Other Properties: Excellent compatibility with nonionic/ampholyte surfactants; has an auxiliary effect on skin barrier repair.
- Stability: [Unclear – possibly related to pH] Stable in the range of 6.0-10.0; may undergo oxidative degradation when exposed to strong oxidants.
Supplementary Technical Details for Sodium Lauroyl Aspartate
- Production Method: Lauric acid and aspartic acid undergo an acylation reaction under an alkaline catalyst, followed by neutralization, decolorization, and crystallization purification to obtain the sodium salt.
- Acute Toxicity (LD50): Oral LD50 in rats: >15000 mg/kg (practically non-toxic); Skin Irritation Test: No irritation (Grade 0 reaction)
- Chronic Toxicity: High safety for long-term skin contact, complies with EU EC 1223/2009 cosmetic regulations, no sensitization reports.
- Upstream and Downstream Products (Raw Materials): Upstream: Lauric acid (industrial grade ≥99%), L-aspartic acid (food grade), sodium hydroxide (reagent grade)
- Main Impurities: Unreacted lauric acid ≤0.8%, inorganic salts ≤0.5%, pigments ≤0.001%
- Environmental Characteristics: Complies with OECD Meets 301B biodegradability testing standards, with a degradation rate ≥92% and no environmental accumulation.
- Shipping methods: Samples: Express (SF Express/Federal Express); Bulk: Land/Sea freight (selected based on customer’s region)
- Payment methods: Wire transfer (T/T), Letter of Credit (L/C), Western Union, etc. (negotiable)
- Certifications: ISO9001 Quality Management System Certification, GMP Cosmetic Production Standards, EU ECOCERT Natural Certification
- Technical support: Provides formulation adaptation advice, process parameter guidance, and product problem solutions (24-hour response)
Packaging and Storage of Sodium Lauroyl Aspartate
- Packaging: 1kg/aluminum foil bag (food grade), 25kg/paper drum (lined with polyethylene film bag), customized packaging available.
- Storage: Store in a cool, dry place (temperature ≤30℃, relative humidity ≤60%), avoid direct sunlight and humid environments.
- Shelf Life: 24 months unopened, recommended to use within 3 months after opening.
- Molecular Formula: C16H30NNaO5
- Molecular Weight: 339.41 g/mol
- CAS No.: 41489-18-3
- Product Characteristics: Low irritation, high biocompatibility, readily biodegradable (BOD5/CODcr≥0.6), fine foaming
- Usage Restrictions: Avoid mixing with strong acids (pH<5) (easily precipitates free acid); do not heat above 80℃ for extended periods
- Precautions: Wear a dust mask during operation; avoid inhaling dust; if accidentally splashed into eyes, immediately rinse with plenty of water for 15 minutes
- After-sales Service: Provides COA (Analysis Report) and MSDS (Material Safety Data Sheet)
Applications of Sodium Lauroyl Aspartate
- Cosmetic-grade Sodium Lauroyl Aspartate can be used as a key ingredient in high-end personal care products.For example, high-end shampoos, high-end facial cleansers, and baby products.It not only provides gentle cleansing and a pleasant feel on the skin, but is also the core of its tear-free formula.
- Cosmetic-grade Sodium Lauroyl Aspartate can be used in the production of some niche personal care products.Pet shampoo (mildly irritating to pets) or feminine hygiene wash (extremely gentle).
- Cosmetic-grade Sodium Lauroyl Aspartat is suitable for use in oral care products such as children’s toothpaste, toothpaste for sensitive gums, and gentle mouthwash.It has the characteristics of being non-irritating to the oral mucosa and safe.
- Industrial-grade Sodium Lauroyl Aspartate is a mild cleaning agent used in industrial applications.Used for cleaning metal surfaces, precision instruments/electronic devices, and pretreatment of textile fabrics.
- Industrial-grade Sodium Lauroyl Aspartate is an auxiliary agent used in textile printing and dyeing, coatings, inks, adhesives, and other fields.Examples include wetting agents in printing and dyeing, dispersants for dyes, and emulsifiers in textiles.
- Industrial-grade Sodium Lauroyl Aspartate can also be used in water treatment, agricultural formulations, leather processing, ceramics processing, and other fields.
- Pharmaceutical-grade Sodium Lauroyl Aspartate can be used as a topical preparation.Examples include topical dermatological creams and medical cleaning and disinfecting agents.
- Pharmaceutical-grade Sodium Lauroyl Aspartate can also be used as a membrane material or surfactant component for liposomes or nanomicelles, a biocompatible surface modifier or preparation template, and a detergent/lysis buffer component in cell culture or biological experiments.
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