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NC-v4 MRc4:Building product disclosure and optimization - material ingredients

How to tell if the chemical inventory of a product is disclosed to 0.1% (1000ppm)

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Ashley Hu
Jr. Sustainable Building Advisor
Perkins+Will
LEEDuser Basic Member
8 thumbs up

Hello there,

Option 1 accepts the following as documentation: 

  • Document to demonstrate the chemical inventory of the product to at least 0.1% (1000ppm).
  • The manufacturer has published complete content inventory for the product following these guidelines:
    • A publicly available inventory of all ingredients identified by name and Chemical Abstract Service Registration Number (CASRN).
    • Materials defined as trade secret or intellectual property may withhold the name and/or CASRN but must disclose role, amount and GreenScreen benchmark, as defined in GreenScreen v1.2.

A manufacturer sent me a list of ingredients with different percentages varying from 0.15% to 73.05%. How do I tell if the ingredients of a product is disclosed to 0.1%?

Thank you!

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Bill Freeman
Consultant
RFCI
LEEDuser Basic Member
4 thumbs up

Mon, 06/25/2018 - 20:39

Very simple answer - if you don't trust a manufacturer you don't specify a product. Hopefully if it is reputable building products manufacturer you should assume it is giving you accurate information on the ingredients in a product and is well aware of the requirements to report to 0.1% 

Mon, 02/11/2019 - 23:52

I have the same question. The manufacturer is trust worthy, but if the MSDS doesn´t specify it is disclosed to 0.1%, how can I identify the scope of disclosure?

Thu, 07/27/2023 - 08:08

Hi Ashley, were you able to submit this material to LEED and was it accepted without further clarifications? 
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Megan Bodin
Sustainability Consultant
Arup
LEEDuser Basic Member
2 thumbs up

Wed, 01/24/2024 - 22:21

I'd like to know what to look for on manufacturer inventories to be sure they demonstrate the chemical inventory of the product to at least 0.1% (1000 ppm) too. Has anyone gotten clarity on that?

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