What is HALS-292 and how does it compare across HALS grades?
HALS-292 (CAS 41556-26-7, C30H56N2O4) is a liquid monomeric hindered-amine light stabilizer based on bis(1,2,2,6,6-pentamethyl-4-piperidinyl) sebacate. Its N-methyl (pentamethyl) piperidine structure is frequently chosen for coatings; as a low-MW grade it is more mobile than the oligomeric and polymeric grades (2020, 622, 944). Bulk quantities are sourced to specification.
- ▸ Liquid N-methylated HALS for durable UV/light and gloss protection of automotive, industrial and wood coatings
- ▸ Low-basicity stabilizer compatible with acid-catalyzed coating systems
- ▸ Weathering protection of PU, PVC, ABS/ASA, PS and TPE/SBS articles
| Grade | Structure class | CAS No. | Mol. wt (g/mol) |
|---|---|---|---|
| HALS-770 (bis-tetramethylpiperidinyl sebacate) | Monomeric | 52829-07-9 | 480.7 |
| HALS-292 (bis-pentamethylpiperidinyl sebacate) you are here | Monomeric (liquid) | 41556-26-7 | 508.8 |
| Bis-piperidinyl isophthalamide | Monomeric | 42774-15-2 | 442.6 |
| Monomeric C16-18 piperidinyl ester | Monomeric | 167078-06-0 | — |
| HALS-123 (N-alkoxy NOR-HALS) | Monomeric (NOR) | 129757-67-1 | — |
| HALS-2020 (triazine-piperidine) | Oligomeric | 192268-64-7 | 684.1 |
| Oligomeric triazine-piperidine | Oligomeric | 106990-43-6 | 2285.6 |
| HALS-622 (succinate-piperidinol polyester) | Polymeric | 65447-77-0 | — |
| HALS-944 (triazine-piperidine) | Polymeric | 70624-18-9 | — |
How to choose: HALS are 2,2,6,6-tetramethylpiperidine radical scavengers that regenerate to protect polymers and coatings from UV and thermal oxidation. They are grouped by molecular weight and structure, which sets mobility versus permanence: monomeric grades (770, 292) diffuse quickly for fast protection but migrate and extract more readily; oligomeric and polymeric grades (2020, 622, 944 and the oligomeric triazine) resist volatilization and extraction for long-term durability in thick sections and demanding outdoor exposure. The N-alkoxy NOR-HALS grade (123) carries lower basicity, improving compatibility with acid-cure coatings and flame-retarded or agrochemical-exposed systems where basic HALS can be neutralized.
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A grade-specific Safety Data Sheet (SDS) — with the complete hazard classification, handling precautions, and transport information — is supplied with every shipment and available on request. Confirm all safety and regulatory details against the SDS for your specific grade.
Request SDS →Cross-reference: comparable to Tinuvin 292 (a BASF product): the same liquid two-ester HALS chemistry class, bis- and methyl-(1,2,2,6,6-pentamethyl-4-piperidinyl) sebacates, main component CAS 41556-26-7. Blend ratios are producer-specific, so confirm suitability in your coating system; RawSource is independent of BASF. The RawSource TDS and lot CoA govern.
HALS-292 is the liquid monomeric HALS standard for coatings — a methylated (N-methyl) sebacate-piperidine that gives excellent light stability in automotive and industrial coatings, comparable to Tinuvin 292. Identity: CAS 41556-26-7.
What it is
HALS-292 (CAS 41556-26-7) is a liquid blend of pentamethyl- and methyl-substituted piperidinyl sebacates. Being liquid, it is easy to meter and disperse in coating formulations, and its N-methyl structure is well suited to clear and pigmented coatings.
How it protects against UV
Like all HALS it scavenges UV-generated radicals through a regenerated nitroxyl cycle rather than absorbing light, giving long-term gloss retention and resistance to fading, chalking and cracking in coatings.
Applications
HALS-292 is used in automotive coatings, industrial and wood coatings, and clearcoats, paired with a benzotriazole or triazine UV absorber. For acid-catalyzed coatings, compare the NOR-HALS HALS-123; the solid monomeric option is HALS-770.
Forms, grades and handling
HALS-292 is supplied as a clear liquid in drums, IBCs and bulk. Properties are typical reference values; the Certificate of Analysis (CoA) for the lot you buy governs. Brand names appear only as nominative cross-references to the generic equivalent we supply — RawSource is not affiliated with those brand owners. Handle per the current Safety Data Sheet (SDS); each lot ships with CoA, TDS and SDS.
Bulk supply and RFQ
RawSource sources HALS-292 direct from producers in bulk, with CoA, TDS and SDS per lot. Tell us your polymer, part thickness and service life, the chemical environment (acidic, flame-retarded, agrochemical), and whether you need a complete UV-absorber-plus-HALS package, and we will quote it. See the full range and selection logic in the HALS guide.
Typical Properties
Typical reference values, not a specification; the Certificate of Analysis (CoA) for the lot governs.
| Property | Typical Value |
|---|---|
| Chemical / class | Hindered amine light stabilizer (monomeric, liquid) |
| HALS type | Monomeric (liquid) |
| Permanence | Liquid; for coatings |
| Comparable to | Tinuvin 292 (nominative reference; generic equivalent) |
| CAS Number | 41556-26-7 |
| Molecular Formula | C30H56N2O4 |
| Molecular Weight | 508.8 g/mol |
| Handling | Refer to the current SDS |
Regulatory & registration requirements
- TSCA (US):
- REACH (EU): Not determined from public registry
- EC number: 255-437-1
Source: EPA TSCA Inventory (July 2025 release) · ECHA CHEM — retrieved 2026-07-12
Frequently Asked Questions
What is HALS-292 used for?
HALS-292 (CAS 41556-26-7) is a liquid monomeric hindered amine light stabilizer used in automotive, industrial and wood coatings and clearcoats for long-term gloss retention and weathering resistance. It is comparable to Tinuvin 292 and is paired with a UV absorber.
Why is HALS-292 used in coatings?
It is a liquid, so it disperses easily in coating systems, and its N-methyl piperidine structure suits clear and pigmented coatings, giving excellent gloss retention and resistance to fading and cracking.
How is bulk HALS-292 supplied and quoted?
RawSource supplies HALS-292 in bulk with CoA, TDS and SDS per lot. Pricing is quote-based on grade and volume; submit an RFQ with your polymer, service life and environment.
What is the REACH and TSCA regulatory status of HALS-292 Light Stabilizer (Bis(1,2,2,6,6-pentamethyl-4-piperidinyl) Sebacate)?
HALS-292 Light Stabilizer (Bis(1,2,2,6,6-pentamethyl-4-piperidinyl) Sebacate) (CAS 41556-26-7) is listed as Active on the U.S. EPA TSCA Inventory; its REACH registration status is not determined from the public ECHA registry.
Is there a Tinuvin 292 equivalent?
HALS-292 is the same liquid HALS blend class documented for Tinuvin 292: bis(1,2,2,6,6-pentamethyl-4-piperidinyl) sebacate (CAS 41556-26-7) with the methyl monoester. Ester ratios are producer-specific and not published for either grade, so run a side-by-side in your clearcoat or coating before converting. Tinuvin is a BASF brand; RawSource is independent of BASF.