Strontium Octoate 10% Sr CAS 2457-02-5 Lead‑Free Through Drier for Exterior Alkyd
Strontium Octoate 10% Sr CAS 2457‑02‑5 is liquid strontium 2‑ethylhexanoate auxiliary drier containing 10% strontium metal content. As an environmental‑friendly lead‑free through drier, it focuses on promoting deep cross‑linking of paint film. Matched with cobalt‑manganese primary driers, it significantly improves outdoor weather resistance, gloss retention and water resistance of exterior alkyd coatings, reduces chalking and cracking risk under long‑term outdoor exposure. Widely used for exteri
Product Overview
Strontium Octoate 10% Sr CAS 2457‑02‑5 belongs to octoate‑series metal carboxylate auxiliary drier for air‑drying alkyd coating systems. It cannot achieve independent drying effect and must be compounded with cobalt‑manganese primary drier combinations. For exterior alkyd coatings exposed to ultraviolet ray, humidity and temperature alternation, insufficient through‑curing will cause premature chalking, cracking and gloss loss. This strontium‑based through drier improves cross‑linking density of inner paint layer, optimizes outdoor aging resistance. It dissolves well in aliphatic and aromatic hydrocarbon solvents, shows good compatibility with long‑oil and medium‑oil alkyd resins, maintains stable catalytic activity in finished paint storage and industrial batch‑to‑batch manufacturing.
Key Features
‑ 10% standard strontium content for stable deep‑layer curing auxiliary performance ‑ Lead‑free composition, satisfies environmental‑friendly requirements for exterior coatings ‑ Outstanding through‑curing capacity, improves inner‑layer cross‑linking of thick paint film ‑ Remarkably enhances outdoor weather resistance, gloss retention and water resistance ‑ Reduces chalking and cracking tendency of coatings under long‑term outdoor exposure ‑ Excellent synergistic compatibility with cobalt and manganese primary driers ‑ Good solubility in mineral spirits, xylene and conventional coating solvents ‑ Consistent batch‑to‑batch quality for mass‑production of weather‑resistant outdoor alkyd paints
Technical Specifications
‑ Product Name: Strontium Octoate (Strontium 2‑Ethylhexanoate) ‑ Strontium Content: 10% Sr ‑ CAS No.: 2457‑02‑5 ‑ Appearance: Pale yellow transparent liquid ‑ Solubility: Soluble in aliphatic, aromatic hydrocarbon solvents and alkyd resins ‑ Density: 1.02‑1.08 g/cm³ @25℃ ‑ Viscosity: Low‑viscosity liquid ‑ Flash Point: ≥60℃ ‑ Moisture: ≤0.2%
Application Scenarios
‑ Exterior architectural solvent‑borne alkyd decorative coatings ‑ Outdoor industrial protective alkyd enamels and anti‑corrosive finishes ‑ Long‑oil and medium‑oil alkyd systems requiring superior weather resistance ‑ Thick‑film exterior alkyd formulations pursuing lead‑free specifications ‑ Composite drier system cooperating with cobalt‑manganese primary driers
Usage Recommendation
‑ Typical dosage: 0.07%‑0.30% calculated on total paint weight (as metal strontium) ‑ Premix fully with cobalt, manganese and other drier additives before adding into coating formula ‑ Do not add during high‑temperature resin synthesis procedure ‑ Standalone use is ineffective, cobalt‑manganese primary drier combination is mandatory ‑ Adjust dosage based on through‑curing test, water resistance and artificial weathering evaluation ‑ Complete full‑set laboratory assessment before mass‑scale production
Package & Storage
‑ Standard package: 25kg / 200kg metal drum ‑ Store in cool, dry and well‑ventilated warehouse, keep away from heat source and open flame ‑ Tightly seal container after opening to prevent solvent volatilization and performance deterioration ‑ Shelf life: 12 months under proper storage conditions
Safety Notes
‑ Combustible liquid, keep away from all ignition sources. ‑ Avoid skin contact and eye splash. Wear chemical‑resistant gloves and safety goggles during handling. ‑ Avoid inhalation of vapor and mist, ensure effective local ventilation. ‑ Refer to SDS for full guidance on handling, transportation and emergency disposal.
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