Pharos Supports Partner Organizations in Reducing Hazards

Michel Dedeo | March 14, 2017 | Newsletter

The Pharos Chemical and Material Library (CML) is an online catalog of over 46,000 chemicals, polymers, metals, and other substances that is continuously updated to provide accurate health hazard data. It identifies key health and environmental information using:

  • 44 authoritative scientific lists for specific human and environmental health hazards

  • 28 restricted substance lists

Pharos has recently expanded to better serve three of its partner organizations as follows.


GreenScreen Scoring Update

A new GreenScreen update, recently released by Clean Production Action, improves the ability of the GreenScreen List Translator to identify substances as potential PBTs (persistent and bioaccumulative toxics). HBN has updated the calculation* of GreenScreen List Translator scoring in Pharos to use this protocol. This changes 640 chemicals from LT-UNK to LT-P1.

In brief, this change affects chemicals that have various combinations of Persistent, Bioaccumulative, and Toxic (PBT) properties. Previously, these PBT properties could trigger a LT-P1 or LT-1 score only when all properties were indicated by a single hazard list. In the new guidance, individual persistence, bioaccumulation or toxicity properties can be combined from different lists to show that a chemical has a combination of PBT properties that should be scored as a LT-P1 or LT-1*.

For example, Pyridine, 2-[3-(4-chlorophenyl)propyl]- [94022-31-8] is on two lists: CEPA DSL Persistent and CEPA DSL Bioaccumulative. Individually, these each give a chemical LT-UNK scores, but when combined, they give a LT-P1*.

* For details on how these calculations are performed, see section 17.8.2 in the GreenScreen Guidance Document. To use this document, Clean Production Action requests that you agree to the terms of use available from here.


Living Building Challenge Red List

The Living Building Challenge (LBC) Red List is made of 22 categories of chemicals prohibited in LBC projects. The Pharos CML now has two versions of this list. The first version is a static list of about 800 chemicals that fit these categories, as published by the International Living Future Institute to support Version 3.0. The second version, called “Prospective Red List substances”, is a dynamic list of about 10,000 chemicals that HBN has determined to fit these categories. This is based on our growing database of chemical hazards and is continuously updated to provide accurate health hazard data.


Cradle to Cradle List Hazards

Cradle to Cradle (C2C) assessors and anyone interested in a preview of the C2C Material Health Hazard Rating for a substance can now use Pharos to grade chemicals in their product against the authoritative hazard lists recognized by C2C. Each chemical page has a C2C tab that shows which endpoints get green, yellow, grey, or red rating, and which lists these scores are based on. For example, the page for Pyridine, 2-[3-(4-chlorophenyl)propyl]- [94022-31-8] shows it has C2C ratings for four endpoints.