Fire Chemistry

Course Description

FFP2111 – Fire Chemistry is a 3-credit, 45-contact-hour college course covering the chemistry of combustion and of the hazardous materials firefighters encounter. Institutions title it Fire Chemistry and, at Seminole State College, Hazardous Materials Chemistry I — a title difference that accurately signals where the course's weight sits.

It carries college credit and counts toward an A.S. in Fire Science Technology, and the Florida State Fire College publishes a corresponding state syllabus. The course has no prerequisite, and it does not assume prior chemistry — it builds the chemistry it needs from the beginning, oriented toward two practical purposes: understanding why fires behave as they do, and predicting what a given chemical will do when it burns, spills, or mixes with something else.

Content covers matter and energy — states, physical and chemical properties, and energy transfer; atomic structure and bonding at the level the subject requires; chemical reactions and stoichiometry basics; the chemistry of combustion — the fire tetrahedron, oxidation, heat of combustion, flash point, fire point, autoignition temperature, flammable limits, and vapor density; hydrocarbons and organic chemistry — the families most relevant to fire and hazardous materials; flammable and combustible liquids and their classification; flammable gases; oxidizers, reactive and unstable materials, corrosives, and toxic products of combustion; chemical incompatibilities and what happens when the wrong things mix; hazardous materials identification — DOT hazard classes, placards, NFPA 704 markings, shipping papers, and safety data sheets; and extinguishing agents and why each works on the fires it works on.

Offered at approximately 12 Florida institutions with fire science programs.

Learning Outcomes

Required Outcomes

• Describe states of matter and the physical and chemical properties relevant to fire behavior.
• Describe atomic structure and chemical bonding at the level required for the subject.
• Explain oxidation-reduction and apply it to combustion.
• Describe the fire tetrahedron and the role of each component.
• Define and apply flash point, fire point, autoignition temperature, and flammable limits.
• Apply vapor density and specific gravity to predict the behavior of a released material.
• Describe hydrocarbon families and relate structure to flammability and toxicity.
• Classify flammable and combustible liquids and describe the hazards of each class.
• Describe flammable gases and the hazards of compressed and liquefied gases.
• Identify oxidizers, reactive materials, corrosives, and water-reactive substances.
• Predict outcomes of common chemical incompatibilities.
• Identify toxic and irritant products of combustion and describe their physiological effects.
• Interpret DOT hazard classes, placards, labels, and shipping papers.
• Interpret NFPA 704 markings and safety data sheets.
• Use the Emergency Response Guidebook to determine initial isolation and protective actions.
• Select appropriate extinguishing agents and explain the chemistry of their action.
• Relate fire chemistry to fire cause determination and origin analysis.

Optional Outcomes

• Describe accelerant identification and laboratory analysis in fire investigation.
• Describe radiological and biological hazard awareness.
• Describe environmental consequences of hazardous materials releases.
• Describe plume modeling and dispersion estimation.
• Describe fire modeling and its use in investigation.
• Describe the certification pathway to Fire Investigator and Hazardous Materials Technician.

Major Topics

Required Topics

• Matter and energy — states, changes of state, and heat transfer.
• Atomic structure and bonding — elements, compounds, ionic and covalent bonds.
• Chemical reactions — types, equations, and energy release.
• Combustion chemistry — the fire tetrahedron and the chain reaction.
• Ignition properties — flash point, fire point, autoignition, and ignition energy.
• Flammable range — upper and lower flammable limits and their significance.
• Vapor behavior — vapor density, vapor pressure, and specific gravity.
• Organic chemistry for fire service — alkanes, alkenes, alkynes, aromatics, alcohols, and polymers.
• Flammable and combustible liquids — classification and hazards.
• Gases — compressed, liquefied, cryogenic, and BLEVE conditions.
• Oxidizers and reactives — peroxides, water-reactives, and pyrophorics.
• Corrosives — acids, bases, pH, and material compatibility.
• Toxic products of combustion — carbon monoxide, hydrogen cyanide, and irritants.
• Incompatibilities — mixing hazards and segregation requirements.
• Hazard identification systems — DOT classes, placards, NFPA 704, SDS, and shipping papers.
• Emergency Response Guidebook — use and interpretation.
• Extinguishing agents — water, foam, dry chemical, CO₂, and clean agents, and the chemistry of each.

Optional Topics

• Accelerant detection and laboratory analysis.
• Radiological and biological awareness.
• Environmental impact of releases.
• Plume modeling and dispersion.
• Fire modeling in investigation.
• Fire Investigator and Hazmat Technician pathways.

Resources & Tools

• Chemistry of Hazardous Materials (Meyer), Pearson — the standard text in this field.
• Hazardous Materials Chemistry for Emergency Responders (Burke), CRC Press.
• Florida State Fire College / Bureau of Fire Standards and Training — publishes the Fire Chemistry syllabus defining the state course content.
• Emergency Response Guidebook — free from USDOT, carried on every apparatus; the course teaches its use directly.
• NIOSH Pocket Guide to Chemical Hazards — free and authoritative on exposure limits and properties.
• CAMEO Chemicals (NOAA/EPA) — free chemical database with a reactivity predictor for mixtures; genuinely useful for the incompatibility unit.
• NFPA 704 — the standard system for identifying hazards of materials for emergency response.
• Safety data sheets — real SDSs for common industrial chemicals; free and the practical document responders actually read.
• NFPA 921 — Guide for Fire and Explosion Investigations, where the course connects to origin and cause.

Career Pathways

• Firefighter (SOC 33-2011) — where this content improves size-up and hazard recognition immediately.
• Hazardous Materials Technician — a specialized team assignment requiring additional certification.
• Fire Investigator — the course is oriented partly toward arson investigation; requires further certification.
• Fire Inspector (SOC 33-2021) — storage and use requirements for hazardous materials.
• Industrial Safety and Emergency Response — ports, utilities, refineries, and manufacturing.
• Environmental Health and Safety Specialist (SOC 19-5011).
• Emergency Management — county and state hazmat planning.
• Fire Officer — via FFP1810C and the Fire Officer sequence.

Special Information

College-credit fire course, not a Minimum Standards clock-hour course

FFP2111 carries the 1/2 in the thousands position, which marks the college-credit track:

Fire Chemistry has no prerequisite and does not require firefighter certification, so it is accessible to students exploring the field as well as to working firefighters pursuing a degree.

The title difference tells you what the course actually is

Seminole State College titles this Hazardous Materials Chemistry I, and that is an accurate description of most of the content. Students expecting a course purely about how structure fires burn will find that a substantial share concerns hazardous materials — identification, behavior, incompatibility, and response. That is deliberate: the chemistry that explains combustion is the same chemistry that predicts what a tanker leak will do. Verify the local title and syllabus, since the emphasis varies.

No chemistry background is assumed — and that is the point

The course builds the chemistry it needs from scratch, oriented toward operational decisions rather than toward a chemistry major's curriculum. Students intimidated by chemistry should not be: the objective is not to balance complex equations but to look at a placard, a safety data sheet, or a spill and predict what it will do. Students who have taken general chemistry will find the early weeks easy and should not coast through the fire-specific properties, which is where the actual content is.

Vapor density and flammable limits are the two most operationally important concepts

If a student retains two things, these are the ones. Vapor density determines whether a released gas rises and disperses or settles into low areas, basements, and trenches where it accumulates and finds an ignition source — the reason propane and gasoline vapor behave very differently from natural gas. Flammable limits determine whether a mixture will burn at all, and why a space can be too rich to ignite until it is ventilated. Both drive real decisions on real incidents.

Florida-relevant hazards

Where instructors localize the material, Florida supplies plenty: major port operations at Tampa, Jacksonville, Miami, and Port Everglades moving bulk chemicals and fuels; agricultural chemicals including anhydrous ammonia and fertilizers; phosphate industry operations and sulfuric acid; propane distribution; and hurricane-related releases from damaged storage. The state's transportation corridors carry substantial hazardous cargo, which is what makes the DOT placard content practical rather than academic.