Methyl Linoleate CAS 112-63-0 High-Purity R&D Grade
Methyl Linoleate CAS 112-63-0 High-Purity Grades and Technical Specifications
Methyl Linoleate, chemically known as Linoleic Acid Methyl Ester, is a critical Fatty Acid Methyl Ester (FAME) utilized extensively in lipid research, cosmetic formulation, and organic synthesis. At NINGBO INNO PHARMCHEM CO.,LTD., we prioritize batch consistency to ensure reliable experimental outcomes. The chemical structure, characterized by two cis-double bonds at the 9 and 12 positions, makes it susceptible to oxidation, requiring strict control over storage conditions and purity verification.
For R&D managers, understanding the grade distinction is vital. While industrial grades may suffice for biodiesel components, research applications demand high-purity specifications to avoid interference from trace impurities. Our production focuses on minimizing trans-isomer formation during processing, ensuring the material behaves predictably in sensitive assays. We supply this material as both a reference standard and a bulk Methyl Linoleate 112-63-0 Premium Grade for larger scale formulation needs.
GC-MS Purity Verification Against Sigma-Aldrich L1876 98% GC
When validating a drop-in replacement for established reference materials like Sigma-Aldrich L1876, gas chromatography-mass spectrometry (GC-MS) is the definitive analytical method. The benchmark for high-purity research grade is typically set at 98% GC purity. Our internal quality control protocols align with this standard, utilizing capillary column GC to separate methyl linoleate from adjacent homologues and oxidation byproducts.
Verification involves comparing retention times and mass fragmentation patterns against certified references. It is crucial to note that while the major peak area may exceed 98%, the identity of the remaining 2% is equally important for sensitive biological assays. We focus on ensuring that residual solvents and free fatty acids are kept below detection limits that could skew kinetic studies. Clients requiring exact batch data should request the specific GC chromatogram alongside the Certificate of Analysis.
Transparent COA Parameters: Isomer Distribution and Impurity Limits for R&D
A standard Certificate of Analysis (COA) often lists only purity and water content. However, for advanced lipid research, isomer distribution and oxidative markers are non-negotiable parameters. Trans-isomers, which can form during excessive heating or improper catalysis, alter the physical properties of the ester and its biological interaction. We monitor cis/trans ratios rigorously.
Furthermore, impurity limits extend beyond simple organic contaminants. Peroxide values indicate the extent of initial oxidation, which can propagate during storage. For R&D procurement, we recommend reviewing the following technical parameters before finalizing specifications for your project:
| Technical Parameter | Typical Specification | Measurement Method |
|---|---|---|
| Purity (GC) | ≥ 98.0% | GC-MS |
| Isomer Distribution (cis/cis) | ≥ 95.0% | GC with Silver Ion Column |
| Peroxide Value | ≤ 5.0 meq/kg | AOCS Cd 8b-90 |
| Water Content | ≤ 0.1% | Karl Fischer Titration |
| Acid Value | ≤ 0.5 mg KOH/g | AOCS Cd 3d-63 |
| Appearance | Clear Pale Yellow Liquid | Visual Inspection |
Please refer to the batch-specific COA for exact numerical values as slight variations occur between production runs. This transparency ensures that your formulation guide remains accurate regardless of the procurement batch.
Bulk Packaging Solutions Scaling Beyond 5g Reference Material Units
While reference materials are often shipped in 5g units for analytical calibration, production scaling requires robust bulk packaging solutions. We supply Methyl Linoleate in 200L steel drums and IBC totes designed to minimize headspace and reduce oxidative exposure. For international shipping, the material is classified based on its flash point and physical state, typically falling under non-restricted categories for standard freight when properly declared.
Physical packaging integrity is paramount. Drums are nitrogen-blanketed prior to sealing to displace oxygen, a critical step often overlooked in standard logistics. This reduces the risk of polymerization during transit. We do not make environmental regulatory claims; our focus is on delivering the material in the same chemical state it left the production facility. Clients should specify their required unit load configuration during the quotation phase to ensure compatibility with their receiving infrastructure.
Validating Drop-In Replacement Compatibility for Lipid Research Applications
Transitioning from a legacy supplier to a new manufacturer requires validation of drop-in replacement compatibility. In our field experience, the most critical non-standard parameter affecting compatibility is viscosity shift at sub-zero temperatures. During winter shipping or cold storage, Methyl Linoleate can exhibit increased viscosity or slight crystallization if the cis-isomer content fluctuates.
We have observed that batches with lower cis-purity may show cloud points at higher temperatures, potentially clogging fine filters in automated dispensing systems. To mitigate this, we recommend storing bulk containers above 10°C and agitating the material before use if it has been exposed to cold conditions. Additionally, trace impurities can affect final product color during mixing, particularly in Cosmetic Emollient applications where aesthetic clarity is required. Validating a single batch against your specific process parameters before full-scale adoption is the most effective risk mitigation strategy.
Frequently Asked Questions
What is methyl linoleate?
Methyl linoleate is the methyl ester of linoleic acid, classified as a Fatty Acid Methyl Ester (FAME). It is commonly used as a solvent, intermediate in organic synthesis, and a Cosmetic Emollient in skincare formulations.
What does methyl linoleate smell like?
High-purity grades typically have a faint, characteristic fatty odor. Strong or rancid odors may indicate oxidation or high peroxide values, suggesting degradation during storage or transport.
Is methyl linoleate a biodiesel?
While it is a component found in biodiesel mixtures due to its FAME structure, high-purity methyl linoleate is primarily sourced for chemical synthesis and research rather than fuel applications.
What is the heat of combustion of methyl linoleate?
Specific thermodynamic data such as heat of combustion varies by purity. For precise engineering calculations, please refer to the batch-specific COA or consult standard thermodynamic databases for C19H34O2.
Sourcing and Technical Support
Securing a reliable supply chain for specialized chemical intermediates requires a partner with transparent technical capabilities. NINGBO INNO PHARMCHEM CO.,LTD. maintains rigorous quality control standards to support your R&D and production timelines. We provide comprehensive documentation and logistical support to ensure seamless integration into your operations. Partner with a verified manufacturer. Connect with our procurement specialists to lock in your supply agreements.