What FireHazmat is
FireHazmat is a self-contained, offline-first hazmat reference app for fire-department first responders. It runs on iPhone, iPad, and modern web browsers. There are no servers, no telemetry, and no remote dependencies — the full reference dataset is bundled with the app and works completely offline.
It's built and maintained by an active Fire Captain / Hazmat Technician at Open Scaffold Labs, LLC.
Data sources
Every value in FireHazmat's dataset traces to one of the following six public-domain or public-use sources:
- ERG 2024 — Emergency Response Guidebook (US DOT / PHMSA). Materials, response guides, isolation distances, Table 3 protective-action distances. phmsa.dot.gov/hazmat/erg.
- 49 CFR 172.101 — Hazardous Materials Table (US DOT). Proper shipping names, packing groups, hazard-class cross-references. ecfr.gov/title-49/section-172.101.
- PubChem (NIH / National Library of Medicine, via NCBI). Molecular formulas, CAS numbers, IUPAC names, physical and chemical properties, synonyms, GHS classifications. pubchem.ncbi.nlm.nih.gov.
- NIOSH Pocket Guide to Chemical Hazards (CDC / NIOSH). IDLH values, REL/TWA/STEL/Ceiling exposure limits, safety-critical numeric thresholds. cdc.gov/niosh/npg.
- OSHA HCS 29 CFR 1910.1200 Appendix C (US OSHA / DOL). Verbatim text of GHS pictogram names and H-code hazard statements (physical and health hazards, H2xx–H3xx). osha.gov/laws-regs/1910.1200AppC.
- UN GHS Rev. 9 Annex 3 (UN Economic Commission for Europe). Verbatim text of environmental GHS hazard statements (H400 series) not formally adopted by OSHA HCS. unece.org/transport/dangerous-goods/ghs-rev9-2021.
Every value in the bundled hazmat.json dataset carries a per-field provenance tag identifying which of the six sources above it came from. A pre-promote gate in our build pipeline rejects any value that doesn't trace to an approved source, preventing accidental introduction of unverified data in future updates.
Federal agency disclaimer
Per NCBI's published policy and NLM's Web Policies, quoted verbatim:
"NCBI/NLM does not endorse or recommend any commercial products, processes, or services. The views and opinions of authors expressed on NCBI's Web sites do not necessarily state or reflect those of the U.S. Government, and they may not be used for advertising or product endorsement purposes."
FireHazmat is not affiliated with, endorsed by, or sponsored by the National Library of Medicine (NLM), the National Center for Biotechnology Information (NCBI), the National Institute for Occupational Safety and Health (NIOSH), the Centers for Disease Control and Prevention (CDC), the Occupational Safety and Health Administration (OSHA), the Department of Transportation (DOT), the Pipeline and Hazardous Materials Safety Administration (PHMSA), the United Nations Economic Commission for Europe (UNECE), or any other federal, state, or international agency. This app re-presents these agencies' publicly published data under their respective public-domain or public-use terms.
Why source discipline matters
FireHazmat is a life-safety reference. Fire commanders make decisions based on what's on screen — concentration thresholds, isolation distances, pictogram interpretation, evacuation radii. If the underlying data isn't traceable, the app isn't trustworthy.
The 6-source whitelist above is a hard constraint, enforced by a pre-promote check in the build pipeline: every value in hazmat.json must trace to one of those six sources, or the build is refused. Commercial vendor MSDS strings, paid databases, and unverified sources are excluded by policy and by tooling.
Contact
FireHazmat is built and maintained by Open Scaffold Labs, LLC in Lafayette, California.