EPA TRI Facility · Chemicals
Sigma Life Sciences
The Woodlands, TX
- Total releases
- 9.5K lbs
- Chemicals reported
- 3
- Carcinogens
- 2
- Primary pathway
- Air Releases
AIR Form-R mix
Sigma Life Sciences: how the 9.5K lbs splits
9.5K lbs across all reported pathways
- Air Releases 9.5K lbs 100.0%
Sigma Life Sciences's 9.5K lbs Form-R total is AIR - air releases is 100.0% of the bar. Off-site transfers stay separate from air, water, and land releases. Leading chemical by pounds: Acetonitrile.
Carcinogen-classified pounds vs other reported pounds
Same cumulative TRI total as above, split by EPA/IARC carcinogen classification on each chemical: pounds share, not chemical count. Classification is not a site health-risk score.
LIGHT volume AIR pathway CARC-LEAN
Sigma Life Sciences is an EPA Toxics Release Inventory reporter in The Woodlands, TX, in the chemicals sector. It reported 2.0K lbs of releases across 3 chemicals in 2023, and 9.5K lbs in total across its 2019-2023 reporting years. That ranks 9,914 of 25,986 TRI facilities nationwide by cumulative reported pounds, counting each facility over however many years it has filed. In Texas's 2,016 reporting TRI sites, pounds #1 is not chemical-count #1. Sigma Life Sciences is pounds #962 and chemical-count #1005 at 9.5K lbs. Ascend Performance Materials-Chocolate Bayou Plant leads reported pounds (94.0M lbs) at 36 chemicals (chemical-count #35). Veolia Es Technical Solutions LLC Port Arthur Facility leads chemical count at 246 chemicals (1.5M lbs, pounds #112). Reported volume rose against 2022. Pounds reported are not a measure of toxicity or health risk. Nearest other TRI reporters: Baker Hughes - Hughes Christensen; Tuf-Crete Plant; Halliburton Drill Bits & Services; Welldynamics Inc. Similar-scale Chemicals peers outside Texas: Bluestone Specialty Chemicals LLC; Polyurethane Specialties Co.in C.; Innospec Active Chemicals; Resinlab Kitpackers. Largest disclosed chemicals by pounds: Acetonitrile; Dichloromethane; N,N-Dimethylformamide.
Compare Sigma Life Sciences with
Nearest reporters in Texas
- Baker Hughes - Hughes Christensen The Woodlands · 1.2K lbs
- Tuf-Crete Plant Conroe · 1 lbs
- Halliburton Drill Bits & Services Conroe · 165 lbs
- Welldynamics Inc Spring · 6.5K lbs
Similar-scale Chemicals sites elsewhere: Bluestone Specialty Chemicals LLC (IL) · Polyurethane Specialties Co.in C. (NJ) · Innospec Active Chemicals (NC)
Sigma Life Sciences stamps LIGHT volume with a dominant AIR pathway (100.0% air releases) across 3 chemicals · 2 carcinogen-classified. Cumulative Form-R extract: 9.5K lbs (2019–2023). All figures are self-reported EPCRA §313 estimates, not measured stack emissions or a health-risk score. Scale peers include Bluestone Specialty Chemicals LLC and Polyurethane Specialties Co.in C..
Sigma Life Sciences vs. every reporting TRI facility
Cumulative reported release pounds, with this facility marked in the national distribution
9.5K lbs Top 38% higher than 62% of 25,986 reporting TRI facilities
Each bar is a $1M-wide band; taller bars hold more reporting TRI facilities. The dashed line and filled bar mark this facility. Hover, focus, or tap a bar for its full count, share, and position.
Source U.S. Environmental Protection Agency, Toxics Release Inventory · 2023 reporting year
Sigma Life Sciences: Acetonitrile-led volume
Among the 3,917 Chemicals facilities in this database, Sigma Life Sciences reports the 2,077th-largest volume (9.5K lbs). Its reported volume is concentrated rather than spread: Acetonitrile alone is 75.9% of the total. Scale peers outside Texas include Bluestone Specialty Chemicals LLC and Polyurethane Specialties Co.in C..
Concentrated means ≥60% of Sigma Life Sciences's pounds in one chemical - here Acetonitrile at 75.9%. Not a toxicity score.
Annual disclosure change
What changed: EPA TRI 2023 reporting year
- Sigma Life Sciences's total reported releases rose from 1.8 thousand lb in 2022 to 2.0 thousand lb in 2023, based on EPA TRI filings.
- Sigma Life Sciences's air releases rose from 1.8 thousand lb in 2022 to 2.0 thousand lb in 2023, based on EPA TRI filings.
Sigma Life Sciences Form-R facts
Compare this facility
See how Sigma Life Sciences stacks up against nearby facilities and the typical reporter.
7.9× more than the comparison
40% less than the comparison
Comparison reflects reported pounds and chemical counts, not toxicity or health risk. Averages cover facilities reporting any release.
How does this facility release toxic chemicals?
How Sigma Life Sciences releases toxic chemicals into the environment. Total: 9.5K lbs.
Emissions Trend Summary
From 2019 to 2023, total releases increased by 5% (1.9K lbs to 2.0K lbs).
Sigma Life Sciences: annual Form-R pounds
LIGHT site · AIR pathway · TRI years 2019–2023
- 2019 0
- 2020 0
- 2021 0
- 2022 0
- 2023 0
What this shows Sigma Life Sciences year-over-year reported totals (increased by 5% from 2019 to 2023). TRI figures are self-reported estimates and can swing with production, waste handling, and reporting changes, not only with controls. Lead chemical in the extract: Acetonitrile.
| Year | Total | Chemicals |
|---|---|---|
| 2019 | 1.9K lbs | 3 |
| 2020 | 1.8K lbs | 3 |
| 2021 | 2.0K lbs | 3 |
| 2022 | 1.8K lbs | 3 |
| 2023 | 2.0K lbs | 3 |
Chemical Releases
Aggregated across all reporting years (2019–2023). 2 of 3 chemicals are carcinogens. Sorted by total release volume.
| Chemical | Total | Flags |
|---|---|---|
| Acetonitrile | 7.2K lbs | - |
| Dichloromethane | 1.3K lbs | Carcinogen |
| N,N-Dimethylformamide | 1.0K lbs | Carcinogen |
Sigma Life Sciences · AIR-pathway site
Nearest TRI Facilities to Sigma Life Sciences
Closest other reporters in Texas - including Baker Hughes - Hughes Christensen, Tuf-Crete Plant, Halliburton Drill Bits & Services, ordered by distance.
Showing 8 of 2,015 other reporting facilities in Texas.
Similar Chemicals Facilities
Other Chemicals facilities with similar total release volumes (±80%), outside Texas - e.g. Bluestone Specialty Chemicals LLC, Polyurethane Specialties Co.in C., Innospec Active Chemicals.
Compare beyond Texas
Nationwide peers by reported pounds & chemical count
Cross-state TRI reporters nearest Sigma Life Sciences on cumulative reported pounds (9.5K lbs) and distinct chemical count (3). Release-pound peers include Tampa Bay Fisheries Inc, Betts Co, Amac Enterprises Inc. Chemical-count peers include Industrial C&s of Pr LLC Arecibo Plant, Island Litho Corp., Fenwal International Inc. Neighborhoods are forced disjoint so each axis surfaces a different set of sites.
Similar reported release pounds
Nearest out-of-state reporters (≥1,000 lbs) by absolute TRI pounds, not same-industry or same-county neighbors.
Similar chemical count
Nearest out-of-state reporters by distinct Form-R chemicals (deduped against the release-pound neighborhood).
About TRI Data
Data as of 2023 reporting year. Source: U.S. Environmental Protection Agency (EPA) Toxic Release Inventory.
On this page the largest disclosed chemicals include Acetonitrile, Dichloromethane, N,N-Dimethylformamide; nearby reporters include Baker Hughes - Hughes Christensen. Sigma Life Sciences stamps LIGHT volume · AIR pathway · CARC-LEAN carcinogen-lbs on this Form-R extract. Totals are self-reported estimates under EPCRA §313, not measured stack emissions or a health-risk score.
Use and verify this record
This Sigma Life Sciences TRI extract (LIGHT · AIR · CARC-LEAN · lead Acetonitrile) joins EPA Form-R filings with facility identity - reported pounds, not a health-risk rating.
Sigma Life Sciences totals are self-reported EPCRA §313 estimates for The Woodlands, TX, latest year 2023. Form-R rows span 2019–2023 (5 years). NAICS 325998 · Chemicals. 0.0% of Montgomery TRI pounds in this extract. Nearest ABS peer: Tampa Bay Fisheries Inc (Δ 0 lbs). Pounds ≠ exposure.
Sigma Life Sciences stamps LIGHT volume · AIR pathway · CARC-LEAN · lead Acetonitrile. PlainEnviro renders this EPA Form-R extract from its pipeline; no figure is typed in by an editor. Corrections: editorial policy.
All federal data sources used on this page
- EPA Toxics Release Inventory (TRI) Basic Data Files - annual self-reported chemical-release filings. epa.gov
- EPA TRI Program reference - how chemicals and reported releases are counted. epa.gov
- EPA Facility Registry Service - facility location and identity. epa.gov
- EPA ECHO - regulatory and compliance context. epa.gov
- EPA Envirofacts - the EPA data warehouse exposing these datasets. epa.gov