Lauryl Monophosphate

Basic information

  • Product Name:Lauryl Monophosphate
  • CasNo.:12751-23-4
  • MF:C12H26O.xH3O4P
  • MW:

Physical and Chemical Properties

  • Purity:99%
  • Boiling Point:
  • Packing:solid
  • Throughput:
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Product Details

CasNo: 12751-23-4

MF: C12H26O.xH3O4P

Appearance: solid

Delivery Time: 15 days

Packing: 25kg/drum

Purity: 99%

1. Basic Information

  • Chinese Name: 十二烷基磷酸酯(月桂基磷酸单酯)
  • English Name: Lauryl Monophosphate; Dodecyl Monophosphate
  • CAS Number: 12751-23-4
  • Molecular FormulaC12​H29​O5​P
  • Molecular Weight: 284.33
  • Common Synonyms: Mono-n-dodecyl phosphate; Dodecyl dihydrogen phosphate

2. Physical and Chemical Properties

  • Appearance: White to pale yellow waxy solid or creamy lump.
  • Density: 1.056 g/cm³ (at 20°C).
  • Melting Point: 68–70°C.
  • Boiling Point: 385.5°C at 760 mmHg.
  • Flash Point: 187°C (closed-cup).
  • Solubility: Insoluble in water; soluble in ethanol, isopropanol, and other polar organic solvents.

3. Technical Specifications

Indicator

Typical Value

Description

Solid Content

≥97.0%

Ensures high effective ingredient concentration and stable performance.

Phosphoric Acid Content

≤5.0%

Controls residual acid to avoid irritation to skin and damage to formulations.

pH Value (10g/L in 10% ethanol)

≤3.0

Strongly acidic in ethanol solution; requires neutralization (e.g., with NaOH) for use in aqueous formulations.

Acid Value AV1 (mgKOH/g)

194.0–204.0

Indicates the content of monophosphate groups, reflecting emulsifying capacity.

Acid Value AV2 (mgKOH/g)

350.0–375.0

Total acid value, used to monitor the purity of the product and avoid excessive impurities.

4. Key Performance Characteristics

  • Excellent Emulsification and Solubilization: It exhibits strong emulsifying ability for animal/plant oils, fatty acid esters, silicone oils, and mineral oils, enabling the formation of stable oil-in-water (O/W) or water-in-oil (W/O) emulsions.
  • Good Surface Activity: At low concentrations, it effectively reduces surface tension, providing superior wetting and mild cleansing performance. It also enhances the efficacy of other surfactants when used in combination (synergistic effect).
  • Mildness and Skin Compatibility: Non-toxic and low-irritating, its molecular structure is similar to natural phospholipids, ensuring good affinity with the skin. It produces low foam and is easy to rinse, leaving no tightness after use.
  • High Stability: It has anti-static and anti-corrosive properties, and is stable under acidic, alkaline, and high-temperature conditions. Note: It is not resistant to hard water (calcium/magnesium ions may affect its performance, requiring chelating agents in hard water formulations).

5. Application Fields

  • Personal Care and Cosmetics:
    • Widely used in foam cleansers, body washes, creams, and lotions. Formulations containing Lauryl Monophosphate have a fine, glossy texture, and provide moisturizing and hydrating effects to the skin.
    • It ensures easy rinsing of products, leaving the skin soft without tightness, making it suitable for sensitive skin care products.

6. Safety Information

  • Hazard Class Code: R34 (Causes burns).
  • Safety Instructions:
    • S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
    • S36/37/39: Wear suitable protective clothing, gloves, and eye/face protection.
    • S45: In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible).
  • Hazard Symbol: Xi (Irritant).
  • GHS Classification: Hazardous, H314 (Causes severe skin burns and eye damage).
  • Usage Precautions: Avoid direct contact with skin and eyes. Use in a well-ventilated area and wear appropriate personal protective equipment (PPE) during handling.