Non-basic
Does not interfere with acid catalysts.
HALS 123 Non-basic Light Stabilizer Supplier for Coatings
SUNLIGHT® 123 is a liquid, non-basic NOR-type hindered amine light stabilizer. It is the HALS of choice for acid-catalyzed coatings and systems where basic HALS would interfere.
CAS 129757-67-1 · NOR HALS · Liquid
Product Overview
HALS 123 (bis(1-octyloxy-2,2,6,6-tetramethyl-4-piperidyl) sebacate) carries an alkoxy group on the hindered nitrogen, which makes it essentially non-basic. It does not interfere with acid catalysts or acidic components, so it is used in acid-cure automotive and industrial coatings, often with a UV absorber.
Typical specification. Every shipment is supplied with a batch COA; the limits that apply to your order are confirmed in the quotation and contract.
Key Benefits
Coating durability
Prevents cracking and gloss loss.
Liquid format
Easy incorporation.
Technical Specifications
Typical specification. Every shipment is supplied with a batch COA; the limits that apply to your order are confirmed in the quotation and contract.
| Parameter | Typical value |
|---|---|
| Product Name | Light Stabilizer 123 |
| Brand | SUNLIGHT® 123 |
| CAS No. | 129757-67-1 |
| Chemical Name | Bis(1-octyloxy-2,2,6,6-tetramethyl-4-piperidyl) sebacate |
| Appearance | Light-yellow liquid |
Applications by Material
Pick an application to see how 123 is normally used and what to confirm before your trial.
Acid-catalyzed Coatings
Typically 0.5–2% on binder solids with a UV absorber.
What to confirm for your application
- Catalyst type
- Cure schedule
- Durability target
Automotive Coatings
Used in automotive clear coats and refinish.
What to confirm for your application
- Clear coat type
- Bake conditions
- UV absorber used
Other Sensitive Systems
For systems with acidic components where basic HALS would interact.
What to confirm for your application
- System type
- Acidic components
- Exposure
Packaging & Storage
Packaging
Typically 25 kg pails or 200 kg drums; IBC on request. Confirm the pack in the quotation.
Storage
Keep containers closed, away from heat and direct sun. Warm gently and mix before use if the liquid has thickened in cold weather. See the SDS.
Lead time & terms
Typically 3–15 business days from order confirmation, depending on quantity. FOB, CIF or DAP to major ports.
Technical & Buying Information
Light Stabilizer 123 Buyer Guide
Define the exposure
Note the climate, the expected service life and your weathering test (xenon or QUV hours, retained elongation, gloss or ΔE). For agricultural film, list the pesticides and fumigants the film will meet.
Pick molecular weight for the part
Low-MW HALS move to the surface quickly and suit thick parts; polymeric HALS resist loss from thin films and fibers. Many outdoor packages blend both.
Check interactions
HALS are basic and can interact with acidic additives, halogenated flame retardants, some pigments and sulfur-containing antioxidants. Send your full formulation so we can flag conflicts before the trial.
Lock in supply terms
Agree physical form (powder or granule), packaging, monthly volume and documents up front. A matching CAS number alone does not qualify a new source; run your weathering test and keep the approved lot COA as the reference.
Request a Quotation for Light Stabilizer 123
Start with your material, part thickness, quantity and destination. Add your current stabilizer package and we will quote against it.
| Information | Example |
|---|---|
| Polymer / Material | PP, PE, ABS, compound, masterbatch |
| Application | Injection molding, extrusion, film, fiber |
| Current additive | Grade or supplier you use today |
| Required specification | Your TDS, COA or key limits |
| Quantity | Trial order / monthly / annual volume |
| Packaging | Standard 25 kg or specific requirement |
| Destination | Country and port |
| Documents needed | COA, SDS, REACH, food-contact statement |
Related Light Stabilizers
SUNSORB® 400
Hydroxyphenyl-triazine liquid UV absorber for durable automotive and industrial coatings.
View product →SUNSORB® 1130
Liquid benzotriazole UV absorber for coatings, often paired with liquid HALS.
View product →Light Stabilizer 123 FAQ
123 or 292?
Use 123 in acid-catalyzed or acidic systems; 292 is the general-purpose liquid HALS for other coatings.
What dosage is typical?
0.5–2% on binder solids with a UV absorber.
Is it compatible with waterborne coatings?
It is used in a range of systems; check incorporation with your formulation.
Can I get a sample before ordering?
Yes. Tell us the polymer, the test you plan to run and the quantity you need. Samples ship with a COA so you can compare the lot against your current material.
What if a COA does not match our agreed specification?
Send us the agreed specification and the COA showing the difference (parameter, unit and test method). We check it with the production batch record before you accept the material, and replace or re-test where the lot is out of specification.
Discuss Your Light Stabilizer 123 Requirements
Send your application, specification and quantity to request a quotation or supporting documents.