Baby Safety / Compounds / Cyclic siloxanes D4 and D5 (volatile residuals

Is Cyclic siloxanes D4 and D5 (volatile residuals safe for babies and kids?

High risk for kids

(Babies-specific data is limited; this page draws from human pregnant context.) GHS Warning classification. Classified for reproductive toxicity.

What is cyclic siloxanes d4 and d5 (volatile residuals?

The IUPAC name is 2,2,4,4,6,6,8,8-octamethyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocane.

Also known as: 2,2,4,4,6,6,8,8-octamethyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocane, OCTAMETHYLCYCLOTETRASILOXANE, Cyclotetrasiloxane, octamethyl-, Oktamethylcyklotetrasiloxan.

IUPAC name
2,2,4,4,6,6,8,8-octamethyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocane
CAS number
mixture
Molecular formula
C8H24O4Si4
Molecular weight
296.61 g/mol
SMILES
C[Si]1(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O1
PubChem CID
11169

Risk for babies

High risk

GHS Warning classification. Classified for reproductive toxicity.

Risk for pregnant and nursing people

High risk

GHS Warning classification. Classified for reproductive toxicity.

Regulatory consensus

2 regulatory and scientific bodies have classified Cyclic siloxanes D4 and D5 (volatile residuals. The classifications differ — that's the data.

AgencyYearClassificationNotes
EPA CTX / Genetox—Genotoxicity: negative (Ames: negative, 0 positive / 9 negative reports)
EPA CTX / Genetox—Genotoxicity: negative (Ames: negative, 0 positive / 9 negative reports)

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 cyclic siloxanes d4 and d5 (volatile residuals

  • Industrial Facilities — Manufacturing plants, Waste treatment sites
  • Occupational Environments — Factories, Warehouses

Safer alternatives

Lower-risk approaches that achieve a similar outcome to Cyclic siloxanes D4 and D5 (volatile residuals:

  • Bio-based polymer alternatives where available
    Trade-offs: Performance limitations. End-of-life complexity.
    Relative cost: 2-5× conventional

Frequently asked questions

What products contain cyclic siloxanes d4 and d5 (volatile residuals?

Cyclic siloxanes D4 and D5 (volatile residuals appears in: Manufacturing plants (Industrial facilities); Waste treatment sites (Industrial facilities); Factories (Occupational environments); Warehouses (Occupational environments).

See Cyclic siloxanes D4 and D5 (volatile residuals in the baby app

Look up products containing cyclic siloxanes d4 and d5 (volatile residuals, compare to alternatives, and explore the full data record.

Open in baby View raw API data

Sources (3)
  1. PubChem Compound CID 11169 — database
  2. EPA CompTox Chemicals Dashboard — DTXSID7027205 — epa
  3. ATSDR Toxicological Profile — CAS 556-67-2 — 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 →