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Compound record

4,4'-(1-methylpropylidene)bisphenol

Also known as H3W

77-40-7 · candidate list substance / phenolic substance · plastics

H3W SVHC Candidate ListEU monitoringplasticsendocrine disruption Bisphenol B2,2-Bis(4-hydroxyphenyl)butane4,4'-(1-Methylpropylidene)bisphenol
Dossier Status Obligations Why Alternatives Changes Similar Sources
CAS 77-40-7
Formula C16H18O2
Molecular weight 242.31 g/mol
InChIKey HTVITOHKHWFJKO-UHFFFAOYSA-N

Current EU status

Regulatory snapshot for 4,4'-(1-methylpropylidene)bisphenol

4,4'-(1-methylpropylidene)bisphenol is currently surfaced as candidate list substance in the EU.

The current imported view anchors this substance in CandidateList. The live rationale focuses on Endocrine disrupting properties (Article 57(f) - environment) Endocrine disrupting properties (Article 57(f) - human health), and this page is designed for fast status checks before deeper source review.

Searchers usually land here for the chemical name, CAS number, abbreviation H3W, and the question of whether the substance is tied to SVHC, REACH, POPs, or SCIP-style compliance work.

Candidate List substancecurrent statuslatest imported framework state
8 Jul 2021latest anchor datelisted, effective, or checked date

Identity

CAS, formula, aliases, and use context

CAS
77-40-7
EC
201-025-1
Formula
C16H18O2
Molecular weight
242.31 g/mol
Primary class
candidate list substance
Synonym count
79

Search-friendly summary

4,4'-(1-methylpropylidene)bisphenol (H3W) , CAS 77-40-7, is tracked here as a plastics substance in the candidate list substance class.

Common names and aliases

Bisphenol B2,2-Bis(4-hydroxyphenyl)butane4,4'-(1-Methylpropylidene)bisphenolp,p'-sec-Butylidenediphenol1RC731TJJADTXSID4022442

What to do next

Use the right route for status, SCIP, and source questions

Status

Current legal state, Candidate List signals, and source-backed rationale

Go here for the framework answer block, listed dates, reasons, and the imported basis for the current EU status.

 Obligations

Who needs to act, what to check, and whether SCIP matters

Use this when the question is operational: SCIP, article communication, threshold review, portfolio screening, or substitute work.

 Why monitored

Why this substance is monitored in the EU

Use this when you want the hazard or legal basis behind the current status, not just the status label itself.

 Alternatives

Potential substitutes and nearby molecules

Use this to branch into lower-pressure neighbors, same-class analogs, and candidate-list peers.

 Changes

What changed over time

Use this when you want the timeline, not just the current state.

 Sources

Verify where the data came from

Use this when you need to audit provenance before trusting a claim.

Action prompts

Fast compliance and screening routes

Article duties

Check Candidate List threshold and SCIP relevance

Use this when the substance may sit in articles, components, or imported goods and you need to confirm communication and SCIP workflows.

 Portfolio review

Screen affected product families and formulations

The use profile suggests this substance can appear in materials portfolios where one listing can ripple across multiple SKUs, suppliers, or component bills.

 Source check

Verify the legal source before repeating the claim

Every summary should point back to the underlying authority surface. Use the source route when the exact notice, registry entry, or legal text matters.