Outdoor & Yard / Compounds / Chimassorb 944

Chimassorb 944 in the yard and garden

Moderate risk for your yard

Safety profile for Chimassorb 944 relevant to people, pets, and pollinators.

What is chimassorb 944?

The IUPAC name is Oligomeric HALS (high molecular weight polymer).

Also known as: Oligomeric HALS (high molecular weight polymer), Oligomeric HALS, Polymeric HALS, High-MW hindered amine light stabilizer.

IUPAC name
Oligomeric HALS (high molecular weight polymer)
CAS number
70624-18-9
Molecular formula
(C18H39N5)n
Molecular weight
708.3 g/mol
SMILES
CC1(CC(CC(N1)(C)C)NCCCCCCNC2CC(NC(C2)(C)C)(C)C)C.CC(C)(C)CC(C)(C)N.C1(=NC(=NC(=N1)Cl)Cl)Cl
PubChem CID
93418

Risk for people, pets,

Moderate risk

Regulatory consensus

2 regulatory and scientific bodies have classified Chimassorb 944. The classifications differ — that's the data.

AgencyYearClassificationNotes
REACH——No SVHC; no restrictions; safe oligomeric HALS
FDA——Permitted in food contact plastics; superior to monomeric HALS due to low migration

Regulators apply different standards of evidence — animal-data weighting, exposure-pattern assumptions, epidemiological power thresholds — which is why two scientific bodies can review the same data and reach different conclusions. The disagreement is the data.

Where your yard encounter chimassorb 944

  • polyolefins
  • polyesters
  • food_packaging
  • high_temperature_polymers
  • outdoor_applications

Safer alternatives

Lower-risk approaches that achieve a similar outcome to Chimassorb 944:

  • Bio-based plasticizers (epoxidized soybean oil, citrate esters)
    Trade-offs: Alternative approach; specific tradeoffs depend on application context, scale, and regulatory requirements. Full hazard assessment of alternative recommended before adoption to avoid regrettable substitution.
    Relative cost: 2-5× conventional
  • Non-phthalate plasticizers (DINCH, DEHT) where phthalates are currently used
    Trade-offs: Alternative approach; specific tradeoffs depend on application context, scale, and regulatory requirements. Full hazard assessment of alternative recommended before adoption to avoid regrettable substitution.
    Relative cost: 1.2-2×
  • Additive-free polymer formulations where performance allows
    Trade-offs: Alternative approach; specific tradeoffs depend on application context, scale, and regulatory requirements. Full hazard assessment of alternative recommended before adoption to avoid regrettable substitution.
    Relative cost: Lower (ingredient elimination)

Frequently asked questions

What products contain chimassorb 944?

Chimassorb 944 appears in: polyolefins; polyesters; food packaging.

See Chimassorb 944 in the outdoor app

Look up products containing chimassorb 944, compare to alternatives, and explore the full data record.

Open in outdoor View raw API data

Sources (1)
  1. ATSDR Toxicological Profile — CAS 70624-18-9 — reference

Reference data, not professional advice. Aggregates publicly available regulatory and scientific data; not a substitute for veterinary, medical, legal, or regulatory advice. Why we built ALETHEIA →