Summary:ย FracFocus disclosures that omit fundamental quantity information undermine the integrity of the fracking chemical data. Open-FF (1) found that the operatorย Discovery Natural Resources publishedย 140ย disclosures with quantity data missing for at least some records. We summarize those omissions here.
A chemical disclosure instrument such as FracFocus depends on accurate and complete data. Individual disclosures with poor or missing data can erode the trust of users for the entire system. FracFocus, unfortunately, has many disclosures with missing data. This post is part of Open-FF’s effort to improve FracFocus data integrity and to alert stakeholders to these data weaknesses.
Along with the identity of a chemical used in a fracking operation, the quantity is critical information. The range of material quantities reported in FracFocus stretches from less than one pound to over a million pounds. When quantity data is missing, a reader of a disclosure won’t be able to tell if, say, a hydrochloric acid record is for one pound or one million pounds – the difference between a small jar’s worth and many tanker trucks full.
Discovery Natural Resources omissions
We’ve found many such data omissions (2) in the disclosures of the operating company,ย Discovery Natural Resources LLC. As of this date, we’ve foundย 140ย disclosures with at least one omission, orย 52.6%ย of all of the company’s disclosures (example). The following chart shows when those fracking jobs occurred and how many records were missing data.

Compared to other companies
More than half of all operators reporting to FracFocus had NO records with quantity omissions. In the following graph, each point is an operator. The companies without omissions are not on this graph. Just 25% of companies are above the horizontal line, and 25% to the right of the vertical line. Discovery Natural Resources LLC is highlighted in orange. Clearly a small fraction of companies account for much of the lacking records and Discovery Natural Resources LLC is part of that club.

Which states?
These flawed disclosures are for fracking jobs exclusively in Texas.
Which chemicals?
The following table lists the materials for which quantity was omitted and how many records of Discovery Natural Resources LLC were affected.
| CASRN | Name | Molecular structure | Number of missing values |
|---|---|---|---|
| 67-56-1 | Methanol | ![]() | 92 |
| 108-20-3 | Isopropyl ether | ![]() | 84 |
| 111-46-6 | Diethylene glycol | ![]() | 84 |
| 75-07-0 | Acetaldehyde | ![]() | 84 |
| 71-23-8 | 1-Propanol | ![]() | 84 |
| 68513-87-1 | Tar bases, quinoline derivs. | no image | 84 |
| 12125-02-9 | Ammonium chloride | ![]() | 68 |
| 79-06-1 | Acrylamide | ![]() | 62 |
| 25987-30-8 | 2-Propenoic acid, polymer with 2-propenamide, sodium salt | no image | 55 |
| 9000-30-0 | alpha-D-Galactopyrano-beta-D-mannopyranan | no image | 53 |
| 78330-21-9 | Alcohols, C11-14-isoalcohols, C13-rich, ethoxylated | no image | 51 |
| 9082-00-2 | Poly(propyleneoxy/ethyleneoxy)glycerol | no image | 45 |
| 52624-57-4 | Ethoxylated, propoxylated trimethylolpropane | no image | 45 |
| 7786-30-3 | Magnesium dichloride | ![]() | 39 |
| 7447-40-7 | Potassium chloride | ![]() | 39 |
| 10043-52-4 | Calcium chloride | ![]() | 39 |
| 7664-93-9 | Sulfuric acid | ![]() | 33 |
| 9016-45-9 | Nonylphenoxypolyethoxyethanol | ![]() | 24 |
| 1302-78-9 | Bentonite | no image | 20 |
| 110-44-1 | 2E,4E-Hexadienoic acid | ![]() | 18 |
| 11138-66-2 | Corn sugar gum | no image | 18 |
| 63148-62-9 | Siloxanes and Silicones, di-Me | no image | 18 |
| 532-32-1 | Sodium benzoate | ![]() | 18 |
| 7647-01-0 | Hydrochloric acid | ![]() | 16 |
| 10604-69-0 | Ammonium acrylate | ![]() | 15 |
| 26100-47-0 | Ammonium acrylate-acrylamide copolymer | no image | 15 |
| 1338-41-6 | Anhydrosorbitol stearate | no image | 13 |
| 67-48-1 | 2-Hydroxy-N,N,N-trimethylethan-1-aminium chloride | ![]() | 13 |
| 9004-99-3 | Polyethylene glycol monostearate | ![]() | 13 |
| 7664-38-2 | Phosphoric acid | ![]() | 13 |
| 64742-47-8 | Distillates (petroleum), hydrotreated light | no image | 10 |
| 1310-73-2 | Sodium hydroxide | ![]() | 9 |
| 68002-97-1 | Ethoxylated C10-16 alcohols | no image | 8 |
| 27306-79-2 | Poly(oxy-1,2-ethanediyl), alpha-tetradecyl-omega-hydroxy- | no image | 6 |
| 7631-86-9 | Silica | ![]() | 5 |
| 79-14-1 | Glycolic acid | ![]() | 5 |
| 68551-12-2 | Alcohols, C12-16, ethoxylated | no image | 5 |
| 9002-92-0 | Polyoxyethylene dodecyl mono ether | ![]() | 5 |
| 25085-02-3 | Acrylamide-sodium acrylate copolymer | no image | 5 |
| 9005-67-8 | Polysorbate 60 | no image | 5 |
| 631-61-8 | Ammonium acetate | ![]() | 5 |
| 1338-43-8 | Sorbitan, mono-(9Z)-9-octadecenoate | ![]() | 5 |
| 65997-18-4 | Frits, chemicals | no image | 4 |
| 64-02-8 | Ethylenediaminetetraacetic acid tetrasodium salt | ![]() | 3 |
| 127-09-3 | Sodium acetate | ![]() | 3 |
| 1120-21-4 | Undecane | ![]() | 2 |
| 108-32-7 | Propylene carbonate | ![]() | 2 |
| 107-21-1 | Ethylene glycol | ![]() | 2 |
| 68953-58-2 | Quaternary ammonium compounds, bis(hydrogenated tallow alkyl)dimethyl, salts with bentonite | no image | 2 |
| 1310-58-3 | Potassium hydroxide | ![]() | 2 |
| 64742-55-8 | Distillates, petroleum, hydrotreated light paraffinic | no image | 2 |
| 56-81-5 | Glycerol | ![]() | 2 |
| 15220-87-8 | Propylene pentamer | ![]() | 2 |
The numbers in this post reflect a FracFocus data set downloaded in January 2025. For more up-to-date statistics, visit this link.
Endnotes
- Open-FFย is a public service project, independent of FracFocus, that aims to foster better understanding of chemical uses of the fracking industry by organizing and analyzing chemical disclosures of FracFocus. To see company-specific information about Discovery Natural Resources LLC,ย visit this page.
- The values that are omitted are in the “PercentHFJob” data field which represents the percentage (by mass) of the total fracking fluid. This number is usually less that 1% but because the mass of the total fluid is enormous – often greater that 100 million pounds – the actual mass of the chemical component can be quite large.
- The numbers in this post reflect a FracFocus data set downloaded in January 2025. For more up-to-date statistics,ย visit this link.
- Title image credit: Becky Mansfield, modified by author
- Chemical images credit:ย EPA Comptox

































