LBC Red List Chemical Screener

Living Building Challenge — Red List, Priority Red List & Watch List screening tool

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CAS format: 50-00-0 or digits only. Name search supports partial matches (min 2 chars), and includes common synonyms (BPA, DEHP, PFOA, etc.).

Recent Screens (last 25)

What each Prop 65 / IARC / NTP code means

ColumnCodeMeaning
Prop 65 ToxicityCCarcinogen
DDevelopmental toxicity
MMale reproductive toxicity
FFemale reproductive toxicity
C,D,M,FAll four (e.g., DEHP)
IARC Group1Carcinogenic to humans
2AProbably carcinogenic
2BPossibly carcinogenic
3Not classifiable
NTP RoC StatusknownKnown human carcinogen
raReasonably anticipated to be a human carcinogen
NIOSH ListedyesHas NIOSH Pocket Guide entry (PEL/REL/IDLH/symptoms shown in the tool)