Screened Chemistry Scoring Overview

Screened Chemistry Scoring Rules – version 2 (March 2018)

Step 0 :: Declare and confirm that no banned substances are present in the finished chemical formulation

Chemical manufacturer provides required documentation that no banned substances or restricted substances are present in the finished formulation as ingredients or as impurities above threshold limits (if applicable).

If finished formulation is free of any banned or restricted substances (above threshold limits), the formulation advances to Step 1 below. 

Presence of banned or restricted substances (above threshold) ends Screened Chemistry evaluation.

Step 1 :: Confidential Full Formulation Disclosure (CFFD)

Chemical manufacturer provides full formulation disclosure to Scivera under confidentiality/non-disclosure agreement. If sub-suppliers provide proprietary components for the formulation, engage sub-supplier(s) using SciveraLENS® Rapid Screen to gather full formulation disclosure of component(s) under confidentiality/non-disclosure agreement with sub-supplier.

CFFD Requirements for your formulated product including all raw materials. By chemical and concentration:

1. All intentional ingredients at any concentration
2. Any impurities present in the finished formulation at concentration ≥100 ppm (0.01%)
3. Any chemicals present as impurities at any detectable concentration and also listed on the ZDHC MRSL
 

In some cases, the CFFD process requires engagement with a chemical company’s component chemical and/or raw material supplier(s) to gather ingredient and impurity information. Scivera regularly executes confidentiality and non-disclosure agreements with upstream suppliers to collect this component information. This step protects the sub-suppliers’ confidential product information, while providing the necessary ingredient and impurity data for the requesting chemical company’s Screened Chemistry certification process.

 

Step 2 :: Priority Chemical List Screen

Screen all ingredients and applicable impurities against the following Priority Chemical Lists:

ZDHC MRSL v1, AFIRM RSL, and California Proposition 65

If one or more ingredients or applicable impurities are present on one or more of the above lists, the formulation receives a Screened Chemistry score of 10

If no ingredients or applicable impurities are present on any of the above lists, then move to Step 3.

 

Step 3 :: Positive Chemical List Screen

Screen all ingredients and applicable impurities against the following Positive Chemical Lists:

U.S. EPA Safer Chemical Ingredients List (SCIL):

  • Full Green & Half Green Circles = 35 points
  • Yellow Triangle = 20 points (Updated Scoring – Originally was 10 points)

If the ingredients or applicable impurities are present on any SCIL, then score that ingredient or impurity as noted above.

 

Step 4 :: Chemical Hazard Assessment

If all ingredients and applicable impurities pass Step 2 and one or more are not listed on SCIL in Step 3, then perform one of the accepted Chemical Hazard Assessments as noted below.

Scivera GHS+ Scores:

  • Scivera GHS+ Hazard Category Green = 50 Points
  • Scivera GHS+ Hazard Category Green/Yellow = 40 Points
  • Scivera GHS+ Hazard Category Yellow = 20 points
  • Scivera GHS+ Hazard Category Gray = 15 points
  • Scivera GHS+ Hazard Category Red = Overall formulation score is capped at 10

Based on the resulting Chemical Hazard Assessment result, apply the corresponding score to the ingredient or impurity.

Polymer Rules:

  • Screened Chemistry Acceptable: Meets Safer Choice Polymer Criteria (and additionally does not contain monomers with CMR-PBT or non-CMR/PBT hazards at >0.1%) = 35 points
  • Screened Chemistry Not Acceptable (Low Priority): Doesn’t Meet Safer Choice Polymer Criteria due to other endpoint (but not CMR/PBT related) OR contains monomer with non-CMR/PBT hazards at >0.1% – Potential Weight Score = 20 points
  • Screened Chemistry Not Acceptable (High Priority): CMR, PBT (monomer and polymer) doesn’t Meet Safer Choice Polymer Criteria due to CMR/PBT OR contains residual monomer with CMR/PBT hazards at ≥1000 ppm (0.1%).
    • The presence of a Not Acceptable CMR/PBT High Priority ingredient at any % composition in the formulation will result in an automatic reduction of the overall formulation score to 10 points.

 

Step 5 :: Calculate formulation-level Screened Chemistry Score

Once a Screened Chemistry Score has been assigned to each ingredient and applicable impurity in the finished formulation, calculate a weighted-average score for the formulation by multiplying each ingredient and applicable impurity score by its concentration in the finished formulation and then add all values for an overall Screened Chemistry Score.

EXAMPLE CALCULATION

Chemical name :: Screened Chemistry Score :: Concentration :: Weighted SC Score

Ingredient 1 :: 40 :: 80% :: 32

Ingredient 2 :: 20 :: 19% :: 3.8

Impurity 3 :: 15 :: 1% :: 0.15

Total Screened Chemistry Score :: 35.95

 

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