Stearoyl Benzoyl Methane (SBM)

Stearoyl Benzoyl Methane (SBM) is a premium non-toxic β-diketone auxiliary heat stabilizer specifically developed for transparent and pigmented rigid and flexible PVC applications. When used in combination with calcium-zinc, barium-zinc, or calcium-organic stabilizer systems, SBM dramatically improves initial color hold, long-term heat stability, and transparency while effectively suppressing zinc burning in Ca/Zn-stabilized formulations.
SBM is the most widely used and most effective β-diketone worldwide and is considered an essential component in modern non-toxic, phthalate-free, and heavy-metal-free PVC stabilization packages.

Technical Specifications

Packaging and Storage

• Net weight 25kgs carton.
• Stearoylbenzoylmethane can store in a cool dry place, to prevent moisture, heat. Do not damage the packaging when handling.

Key Advantages of Stearoyl Benzoyl Methane (SBM)

• Outstanding initial color suppression and long-term heat stability
• Eliminates “zinc burning” in Ca/Zn-stabilized PVC
• Improves transparency of clear PVC articles
• Synergistic effect with Ca/Zn, Ba/Zn, and Ca-organic stabilizers
• Non-toxic and approved for food-contact and toy applications
• No odor, no plate-out, excellent weatherability
• Enables replacement of lead and cadmium stabilizers

Primary Applications of Stearoyl Benzoyl Methane (SBM)

• Transparent rigid PVC sheets and films and bottles
• Food-contact and medical PVC (FDA & EU approved)
• Phthalate-free flexible PVC compounds
• PVC flooring, wall coverings, and artificial leather
• Calendered films and profiles
• Injection-molded fittings and toys
• Ca/Zn-stabilized PVC pipes and window profiles

Frequently Asked Questions (FAQs)

What is the main function of SBM in PVC stabilization?
SBM acts as a powerful chelating agent for metal ions and prevents the formation of colored complexes during heat processing. It dramatically improves early color hold and long-term stability in Ca/Zn and Ba/Zn systems.

Is SBM toxic or considered a hazardous substance?
No. SBM is non-toxic, non-corrosive, and approved worldwide for food-contact, medical, and toy applications (FDA, EU 10/2011, EN 71-3).

Can SBM completely replace traditional heat stabilizers?
SBM is an auxiliary stabilizer and must be used together with primary Ca/Zn, Ba/Zn, or calcium-organic stabilizers. It cannot be used alone.

Does SBM affect the transparency of clear PVC?
On the contrary, SBM significantly enhances transparency and brilliance of clear rigid and flexible PVC articles.

Is SBM compatible with liquid and solid Ca/Zn stabilizers?
Yes. SBM is fully compatible with both liquid one-pack and solid Ca/Zn stabilizer systems.

What is the difference between SBM and dibenzoylmethane (DBM)?
SBM (C18 chain) has much better compatibility and lower plate-out than DBM (no alkyl chain). SBM is the industry standard for modern non-toxic PVC formulations.

Where can I buy high-quality Stearoyl Benzoyl Methane (SBM)?

You can contact us via email [email protected] for offers and bulk orders.