Baby Safety / Compounds / Chimassorb 944

Is Chimassorb 944 safe for babies and kids?

High risk for kids

Infants are more vulnerable to Chimassorb 944 than children or adults due to immature hepatic/renal clearance, higher intake-to-body-weight ratio, rapid organ development, and increased gastrointestinal absorption.

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 babies

High risk

Infants are more vulnerable to Chimassorb 944 than children or adults due to immature hepatic/renal clearance, higher intake-to-body-weight ratio, rapid organ development, and increased gastrointestinal absorption.

Neonates and infants up to 12 months have incomplete blood-brain barrier development, immature Phase I/II metabolic enzymes (particularly CYP3A4, UGT1A1), and higher gastrointestinal permeability. Equivalent doses produce higher internal concentrations and longer residence times.

What to do: Minimize infant exposure through source control. For breastfeeding mothers: reduce maternal exposure. For formula-fed infants: use certified low-migration bottles and verified water sources. Consult pediatrician regarding any concerns.

Risk for pregnant and nursing people

Context-dependent

Pregnancy alters the metabolism and distribution of Chimassorb 944, potentially increasing fetal exposure. The developing embryo/fetus is vulnerable during organogenesis (weeks 3-8) and neurological development. Placental transfer should be assumed.

No specific reproductive toxicity data identified, but pregnancy-specific safety data is limited for most chemicals. Precautionary minimization of exposure is recommended.

What to do: Minimize exposure during pregnancy and lactation. Consult healthcare provider regarding specific risks. Consider alternative products with lower hazard profiles.

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 kids 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

Is chimassorb 944 safe for kids?

Infants are more vulnerable to Chimassorb 944 than children or adults due to immature hepatic/renal clearance, higher intake-to-body-weight ratio, rapid organ development, and increased gastrointestinal absorption.

What products contain chimassorb 944?

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

What should I do if my child is exposed to chimassorb 944?

Minimize infant exposure through source control. For breastfeeding mothers: reduce maternal exposure. For formula-fed infants: use certified low-migration bottles and verified water sources. Consult pediatrician regarding any concerns.

See Chimassorb 944 in the baby app

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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 →