Summary:ย Trade secrets in FracFocus, an instrument of transparency, explicitly conceal the identity of chemicals. This masking has long been controversial. Open-FF found 3,230 trade secrets in Montana records. These records spanned all years and 64.2% of published disclosures. About 5,610,000 pounds of trade secret chemicals have been reported. In this post, we summarize the broad patterns of trade secret use in Montana between 2014 and early 2025. We also illustrate the types of trade secrets patterns in the state with local examples. This post is part of a series reporting onย “holes”ย in FracFocus.1
FracFocus is a public online database that provides information about the chemicals used in hydraulic fracturing (fracking) across the United States. While intended to promote transparency, a significant portion of the disclosed chemical information is often withheld as “trade secrets.” This practice has been the subject of debate of how to balance industry’s need to protect proprietary formulas with the public’s right to know about substances injected underground.
Background
- The analysis on this page used FracFocus data download on April 20, 2025.
- Labeling of trade secrets is not standardized in the FracFocus data. Open-FF curates the data to make examining all trade secrets possible. See the documentation.
Broad Patterns in Montana
Quantity of chemicals masked as trade secrets:
5,610,000 pounds
Frequency of Claims: How common are trade secret claims in Montana?
Across all valid Montana chemical records, 15.6% are marked as trade secrets. Trade secret claims appear in 64.2 % of all disclosures.

And the breakdown of the frequency of trade secrets within Montana disclosures is:

Compared to Other States: How does the trade secret use in Montana compare to other fracking states?
Montana ranks second lowest in terms of proportion of disclosures that include trade secrets — that’s only more than California which essentially shut down the use of trade secrets in 2015.

Examples of Trade Secret Use in Montana
We summarize specific examples to highlight the various ways the trade secret designation is applied. Here are some typical scenarios we observed:
Large Percentage of Records as Trade Secrets
In some disclosures, a substantial proportion, sometimes even the majority, of the listed ingredients are marked as trade secrets. This leaves the public with very little information about the chemical composition of the fracturing fluid used in that specific well.
Example: Consider the well operated by Kraken Operating LLC in Richland County. (Click on images to open map and disclosure.)


In this disclosure, 54% of ingredients are listed as trade secrets. For some of these chemicals, the name given seems to be a legitimate chemical name. However, FracFocus instructs us to give primacy to the CASNumber. Even if the name is correct and specific, the โProprietaryโ label makes the identity unclear โ the opposite of transparency. The list of trade secrets for that fracking job are:
| IngredientName | CASNumber | mass (pounds) |
|---|---|---|
| polymer | Proprietary | 39,400 |
| distillates (petroleum), hydrotreated light | Proprietary | 23,400 |
| paraffinic oils | Proprietary | 9,500 |
| polyoxyethylene monooleate | Proprietary | 2,970 |
| bhmt phposphonate | Proprietary | 2,950 |
| ammonium chloride | Proprietary | 1,730 |
| propietary ingredient | Proprietary | 1,410 |
| bhmt phosphonate | Proprietary | 1,410 |
| sorbitan oleate | Proprietary | 1,240 |
| 12-hydroxystearic acid-polyethylene glycol copolymer | Proprietary | 863 |
| poly(oxy-1, 2-ethanediyl), .alpha.-hydro-.omega.-hydroxy-,ether with d-glucitol (2:1), tetra-(9z)-9-octadecenoate | Proprietary | 863 |
| sodium hydrogensulphite | Proprietary | 738 |
| alkyl aryl sulfonic acid salt | Proprietary | 675 |
| alchols, c12-14-secondary, ethoxylated | Proprietary | 612 |
| alkyl sulfonic acid | Proprietary | 455 |
| isopropanol | Proprietary | 251 |
| ammonium acrylate | Proprietary | 126 |
| acrylamide | Proprietary | 126 |
| diethylene triaminepentaacetic acid, pentasodiumsalt | Proprietary | 78 |
| potassium acetate | Proprietary | 31 |
| polyethyleneglycol | Proprietary | 1 |
| ethylene oxide | Proprietary | 1 |
| dioxane | Proprietary | 1 |
Individual Trade Secret Records That Are High Mass
Occasionally, a single ingredient marked as a trade secret represents a significant mass or percentage of the total fluid volume reported in a disclosure. This means a large component of the fracturing fluid’s composition is entirely unknown.
Example: Consider the well operated by Alta Vista Oil Corporation in Big Horn County.


In this well, a single trade secret entry is reported with a mass of 87,900 pounds, representing a significant portion of the total fluid volume. The chemical identity of this large-mass material is withheld.
Montana has 0 trade secret records with masses over 100,000 pounds, unlike most other states.
Systems Approach Disclosures with Trade Secret Records
FracFocus disclosures are often published in the “systems approach” format that decouples product names from chemical identity. FracFocus claims that this practice “decreases the use of trade secrets in disclosures, thereby improving public transparency.” Analyses by Trickey et al. and Underhill et al. disprove that claim across the FracFocus data. Instead, we often find system approach disclosures with multiple trade secret claims – because there is nothing to compel companies to include the chemical identity.
Example: Consider the well operated by Kraken Operating LLC in Richland County.


The disclosure for that well utilizes a systems approach format but still conceals the identity of 12 chemicals, which means 33% of ingredients are listed as trade secrets. The table below lists those records with their quantity.
| IngredientName | CASNumber | mass (pounds) |
|---|---|---|
| sodium phosponates | Proprietary | 11,300 |
| goethite | Proprietary | 3,990 |
| alkyl sulfonic acid | Proprietary | 728 |
| proprietary ethoxylated alcohol | Proprietary | 728 |
| proprietary surfactant | Proprietary | 728 |
| alkyl aryl sulfonic acid salt | Proprietary | 728 |
| petroleum distillates | Proprietary | unknown |
| urea derivative | Proprietary | unknown |
| proprietary amide | Proprietary | unknown |
| organic acid salt | Proprietary | unknown |
| glycol | Proprietary | unknown |
| proprietary surfactant | Proprietary | unknown |
Trade Secret Records Without Any Hints About Material Type
While it is sometimes claimed that operators must supply coarse categories for trade secrets, the data tell a different story. Some trade secret entries provide no descriptive information, such as a functional category (such as “friction reducer,” “surfactant”) or chemical group (“ethoxylated alcohol”), about the material. This makes it impossible to even guess the potential role or nature of the withheld substance.
Examples: The following table lists some of the reported IngredientNames for Montana’s trade secrets that are also reported without informative values for “Purpose”.
| IngredientName | count |
|---|---|
| proprietary ingredient | 98 |
| proprietary | 34 |
| proprietary component | 29 |
| trade secret ingredient | 2 |
| proprietary blend | 1 |
| trade secret | 1 |
Implications for Montana
The patterns and examples of trade secret usage in Montana’s FracFocus data highlight the limitations of the database in providing
chemical transparency. While trade secret protection is a legal right when formalized, its extensive use in fracking disclosures raises questions for regulators, researchers, and the public regarding potential environmental and health impacts. Understanding how and where trade secrets are used is a crucial step in evaluating the effectiveness of public disclosure requirements in the state.
Colorado’s recent law requiring enhanced disclosure in a way that still protects intellectual property may serve as a model to improve overall transparency.
References
Trickey, Kevin, Nicholas Hadjimichael, and Prachi Sanghavi. โPublic Reporting of Hydraulic Fracturing Chemicals in the USA, 2011โ18: A before and after Comparison of Reporting Formats.โ The Lancet Planetary Health 4, no. 5 (May 1, 2020): e178โ85. https://doi.org/10.1016/S2542-5196(20)30076-0.
Underhill, Vivian, Gary Allison, Holden Huntzinger, Cole Mason, Abigail Noreck, Emi Suyama, Lourdes Vera, and Sara Wylie. โIncreases in Trade Secret Designations in Hydraulic Fracturing Fluids and Their Potential Implications for Environmental Health and Water Quality.โ Journal of Environmental Management 351 (February 1, 2024): 119611. https://doi.org/10.1016/j.jenvman.2023.119611.
Title image credit: Becky Mansfield (modified by author)
- Map images ยฉOpenStreetMap; Disclosure tables screenshot from FracFocus PDFs. โฉ๏ธ
