Light Stabilizer 119 Grade Equivalency Tables For Cross-Reference
CAS 106990-43-6 vs Competitor Trade Names: Chemical Structure Identity Tables
In polymer additive procurement, verifying chemical identity is the primary step before qualifying a new supplier. Light Stabilizer 119, identified by CAS 106990-43-6, is a high molecular weight hindered amine light stabilizer (HALS). While various industry standard trade names exist, such as Tinuvin 119 or Chimassorb 119, the fundamental chemical structure remains defined by the CAS registry. Procurement managers must ensure that any alternative sourced matches the specific oligomeric structure of the HALS 119 molecule to guarantee performance consistency in polyolefin applications.
When evaluating a Light Stabilizer 119 technical specifications sheet, the focus should remain on the chemical backbone rather than marketing nomenclature. NINGBO INNO PHARMCHEM CO.,LTD. produces this stabilizer based strictly on the CAS 106990-43-6 structure. This ensures that the functional groups responsible for radical scavenging are present in the correct stoichiometry, regardless of the trade name used in your current bill of materials.
Molecular Weight Class Specifications for Light Stabilizer 119 Cross-Reference
The molecular weight of Light Stabilizer 119 is a critical parameter influencing its volatility and extraction resistance. As a polymeric HALS, it is designed to remain within the polymer matrix during high-temperature processing and long-term outdoor exposure. Standard specifications typically indicate a number average molecular weight (Mn) that classifies it as a low-volatility additive suitable for thick-section polyolefins.
Below is a technical comparison of typical parameters found in grade equivalency assessments. Note that exact values may vary by batch and manufacturing process.
| Parameter | Typical Specification Range | Testing Method |
|---|---|---|
| Appearance | Yellowish to White Powder/Flakes | Visual |
| Molecular Weight (Mn) | Please refer to the batch-specific COA | GPC |
| Purity (HPLC) | >98.0% | HPLC |
| Volatile Matter | <0.5% | Thermogravimetric Analysis |
| Melting Point | Please refer to the batch-specific COA | DSC |
Deviation in molecular weight distribution can affect the diffusion rate of the stabilizer within the polymer. If the Mn is too low, volatility increases; if too high, dispersion may become difficult during compounding.
Critical COA Parameters for Verifying Chemical Equivalence Without Regulatory Claims
Verifying chemical equivalence requires a deep dive into the Certificate of Analysis (COA) beyond simple purity percentages. Procurement teams should request data on trace impurities and thermal stability. A key non-standard parameter often overlooked is the thermal degradation onset temperature. In field applications, we have observed that slight variations in catalyst residue can lower the thermal stability threshold, leading to premature yellowing during extrusion at temperatures exceeding 280°C.
Additionally, handlers should be aware of physical behavior during winter shipping. Light Stabilizer 119 can exhibit slight crystallization or clumping if exposed to sub-zero temperatures during transit, which impacts bulk density and feeding accuracy in gravimetric dosing systems. Allowing the material to acclimate to room temperature before opening drums is recommended to prevent moisture condensation on the powder surface. For safety data regarding dust handling, review the Light Stabilizer 119 Dust Combustion Kst Value Reporting to ensure your facility's explosion protection measures align with the material's physical properties.
Purity Grades and Bulk Packaging Technical Specs for Procurement Managers
Procurement decisions for polymer additive 119 should be driven by packaging integrity and purity grades suitable for the intended application. Standard commercial grades are typically supplied in 20kg cardboard drums with PE liners or 500kg big bags. The choice of packaging impacts moisture uptake and contamination risk during storage.
For large-scale compounding operations, Intermediate Bulk Containers (IBCs) or 210L drums are common shipping methods. It is essential to verify that the inner lining is compatible with fine powders to prevent static buildup and ensure complete discharge. We do not make environmental compliance claims regarding specific regional regulations; instead, we focus on the physical integrity of the packaging to ensure the product arrives in the same condition it left the factory. Proper sealing prevents hydrolysis or agglomeration which could disrupt downstream processing.
Supply Chain Documentation Standards for Chemical Structure Validation
Robust supply chain documentation is necessary to validate chemical structure without relying on regulatory certifications. A complete documentation package should include the COA, Material Safety Data Sheet (MSDS), and a letter of guarantee regarding chemical identity. These documents confirm that the supplied material matches the CAS 106990-43-6 fingerprint.
Traceability is maintained through batch numbering systems that link production data to shipping manifests. This allows procurement managers to track specific lots in the event of quality queries. Consistency in documentation ensures that the UV stabilizer 119 received matches the technical data sheet provided during the qualification phase. For detailed processing parameters, consult our Light Stabilizer 119 Formulation Guide For Polyolefins 2026 to align your internal specifications with industry best practices.
Frequently Asked Questions
How do I cross-reference competitor product codes to CAS 106990-43-6?
To cross-reference competitor codes, match the CAS number on their safety data sheet to 106990-43-6. Verify the chemical name is a hindered amine light stabilizer with the corresponding oligomeric structure. Do not rely solely on trade names.
Can I use this product as a drop-in replacement for existing HALS 119 supplies?
Yes, provided the molecular weight and purity profiles match your current specifications. We recommend running a small-scale trial to verify dispersion and thermal stability in your specific polymer matrix.
What documentation is required to verify chemical identity during sourcing?
Request a batch-specific COA, MSDS, and a structural guarantee letter. These documents provide the necessary technical data to confirm the material matches the required CAS identity.
Does the packaging affect the stability of Light Stabilizer 119 during shipping?
Yes, moisture barrier integrity is critical. Ensure drums or bags are sealed properly to prevent clumping caused by humidity or temperature fluctuations during transit.
Sourcing and Technical Support
Reliable sourcing of Light Stabilizer 119 requires a partner focused on chemical integrity and technical transparency. NINGBO INNO PHARMCHEM CO.,LTD. provides detailed technical support to ensure seamless integration into your supply chain. We prioritize accurate data and physical specification validation over generic compliance claims. For custom synthesis requirements or to validate our drop-in replacement data, consult with our process engineers directly.