Chemical & Industrial Air Purification · North America
Chemical Gas Neutralized at SourceIodine-catalyzed (I₂) air filtration simultaneously removes VOCs, chemical process gases, and hazardous aerosols from chemical plants, petrochemical refineries, semiconductor fabs, and pharmaceutical manufacturing. OSHA PEL · EPA CAA · NFPA compliant. Custom-engineered to your facility's contaminant profile.
304 SS · 4-Chamber · Multi-Contaminant · Laboratory & Field
// Why Chemical Plants Choose Iodine Filtration
Three Mechanisms. One System.
Chemical facilities face multi-contaminant air quality challenges that single-purpose systems cannot address. Iodine Air Systems' iodine-catalyzed filtration operates simultaneously on three threat categories — the only passive HVAC filtration technology to do so.
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VOC Chemical Oxidation
Elemental iodine (I₂) impregnated into filter media oxidizes volatile organic compounds — benzene, toluene, xylene, formaldehyde, methanol, acetone, vinyl chloride — converting them into inert by-products before they enter occupied zones. Effective against EPA HAP (Hazardous Air Pollutant) listed compounds.
VOC removal: 98.4% · EPA 40 CFR Part 63 NESHAP · OSHA Z-1 PEL
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Hazardous Aerosol Capture
HEPA-grade filter media captures chemical aerosols and particulate matter — catalyst dust, chemical mists, API (Active Pharmaceutical Ingredient) aerosols, metal oxide particles — at ≥99.97% efficiency. Zero reaerosolization. Protects workers from OSHA PEL exceedances on particulate chemical contaminants.
≥99.97% @ 0.3 μm · Catalyst dust · API aerosols · Chemical mists
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Process Gas Neutralization
I₂ reacts with and neutralizes hydrogen sulfide (H₂S), ammonia, mercaptans, and other malodorous industrial process gases. For semiconductor applications: neutralizes silane, arsine, and phosphine decomposition products. Multi-contaminant treatment in a single filtration pass.
OSHA 29 CFR 1910.1000 Table Z-1 establishes Permissible Exposure Limits for over 500 chemical substances. Violation of PELs triggers OSHA enforcement actions, operational shutdowns, and significant penalties. Iodine Air Systems engineers each chemical facility system to maintain contaminant concentrations below PEL continuously — with post-installation air quality testing documentation for your OSHA compliance records. Call (650) 646-5199 for a facility assessment.
// Chemical Compound Coverage
Representative Contaminants Treated
The following is a representative selection from the 500+ chemical compounds addressable by iodine-catalyzed filtration. Contact our engineering team with your specific chemical inventory for a site-specific treatability assessment.
Compound
Class
OSHA PEL (TWA)
Industry
I₂ Treatment
Benzene (C₆H₆)
VOC / HAP
1 ppm
Petrochemical, Refinery
I₂ Oxidation ✓
Toluene
VOC
200 ppm
Chemical Mfg, Coatings
I₂ Oxidation ✓
Formaldehyde (HCHO)
VOC / HAP
0.75 ppm
Pharma, Chemical Mfg
I₂ Oxidation ✓
Hydrogen Sulfide (H₂S)
Toxic Gas
20 ppm
Refinery, Wastewater
I₂ Neutralization ✓
Ammonia (NH₃)
Toxic Gas
50 ppm
Chemical Mfg, Refrigeration
I₂ Neutralization ✓
Methanol
VOC
200 ppm
Pharma, Chemical
I₂ Oxidation ✓
Vinyl Chloride
HAP / Carcinogen
1 ppm
Plastics, PVC Mfg
I₂ Oxidation ✓
Silane (SiH₄)
Pyrophoric Gas
0.5 ppm
Semiconductor Fab
I₂ Treatment ✓
Acetone
VOC / Solvent
1,000 ppm
Pharma, Lab, Chemical
I₂ Oxidation ✓
Mercaptans (RSH)
Malodorant Gas
0.5 ppm
Gas Processing, Refinery
I₂ Neutralization ✓
* Treatability varies by compound concentration, contact time, and humidity. Contact engineering for site-specific assessment. PEL values per OSHA 29 CFR 1910.1000 Table Z-1.
// Chemical & Industrial Applications
Every Chemical Process Environment Covered
From petroleum refining to advanced semiconductor manufacturing, each chemical processing environment has a unique contaminant fingerprint, regulatory compliance framework, and installation challenge. Iodine Air Systems custom-engineers for each.
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Chemical Manufacturing
OSHA · EPA CAA · RCRA
Batch and continuous chemical synthesis plants handling organic solvents, acids, and reactive intermediates. Primary contaminants: VOCs, acid mists, solvent vapors. I₂ oxidation treats organic compounds; HEPA captures chemical aerosols. OSHA PEL Table Z-1 and EPA NESHAP compliance documentation provided.
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Petrochemical & Refining
EPA MACT · OSHA PSM · API RP
Petroleum refining, natural gas processing, petrochemical crackers. BTEX (benzene, toluene, ethylbenzene, xylene) is a primary air quality concern — benzene OSHA PEL is 1 ppm. H₂S and mercaptans in gas streams. I₂ filtration treats BTEX, H₂S, and mercaptans in a single filtration train.
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Semiconductor Fabrication
SEMI F15 · NFPA 318 · OSHA
Fab cleanrooms handling silane, arsine, phosphine (pyrophoric/toxic process gases), photoresist solvents, and etchant chemicals. SEMI F15 and NFPA 318 govern gas detection and exhaust. I₂ filtration treats decomposition products and solvent aerosols, supplementing toxic gas exhaust scrubbers.
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Pharmaceutical Manufacturing
FDA 21 CFR · GMP · ICH Q7
API (Active Pharmaceutical Ingredient) manufacturing, granulation, tablet coating. Airborne API cross-contamination is a critical GMP concern. HEPA-grade capture controls API aerosol. I₂ layer neutralizes organic solvent vapors. FDA 21 CFR Part 210/211 and ICH Q7 GMP compliance documentation available.
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Industrial Laboratories
OSHA · NFPA 45 · ANSI Z9.5
Industrial R&D, QC, analytical, and testing laboratories. NFPA 45 and ANSI Z9.5 govern laboratory ventilation. Solvent vapors, chemical aerosols, and toxic gas hazards. I₂ filtration supplements fume hood exhaust, treating residual contaminants in general ventilation return air.
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Specialty Chemical & Gas
DOT · OSHA · EPA RCRA
Specialty chemical producers, industrial gas suppliers, and chemical blending operations. Often handling low-volume, high-hazard compounds (carcinogens, reproductive hazards, acutely toxic agents). I₂ filtration provides the additional safety margin needed for small-volume high-hazard chemical handling.
// Performance Data
By the Numbers
98.4%
VOC Removal Rate
500+
Chemical Compounds
<72h
Typical Installation
100%
OSHA Compliant Systems
// Chemical Facility Filtration — Iodine Air Systems vs Conventional Alternatives
Iodine Air Systems
VOC + Gas + Particulate
Simultaneous treatment: I₂ VOC oxidation + process gas neutralization + HEPA aerosol capture — OSHA PEL for all three contaminant categories
Activated Carbon Only
VOC Adsorption Only
Carbon adsorbs VOCs but saturates — breakthrough occurs without warning. No chemical gas neutralization. No particulate capture. Requires frequent change-out.
Wet Scrubber
Soluble Gas Only
Effective only for water-soluble gases. High maintenance (pump, packing, blowdown). No treatment of VOCs or aerosols. Secondary wastewater generation.
Standard HEPA Only
Particulate Only
HEPA captures particulates but zero VOC or chemical gas treatment. Chemical gases pass through entirely.
// Regulatory Compliance
Chemical Facility Compliance Framework
Chemical facilities operate under the most complex multi-agency regulatory framework of any industry. Iodine Air Systems engineers for compliance with every applicable standard.
OSHA Z-1
29 CFR 1910.1000 — Permissible Exposure Limits
PEL Table Z-1 · 500+ compounds
OSHA's Table Z-1 establishes Permissible Exposure Limits (PELs) for over 500 air contaminants. Our systems are engineered to maintain contaminant concentrations below PEL at all operating conditions. Post-installation air quality testing documentation provided for OSHA compliance records.
EPA § 112
Clean Air Act — Hazardous Air Pollutants
NESHAP · MACT · 187 HAPs listed
EPA Clean Air Act Section 112 lists 187 Hazardous Air Pollutants (HAPs) with maximum achievable control technology (MACT) requirements. National Emission Standards for Hazardous Air Pollutants (NESHAP) apply to chemical and petrochemical source categories. Iodine Air Systems engineers to MACT thresholds for your source category.
NFPA 72
Fire Detection for Chemical Facilities
Hazardous location classifications
NFPA 72 governs fire detection and alarm systems in chemical facilities. Our filter housings and electrical components can be specified for applicable hazardous location classifications (NEC 505/506, Class I Division 1/2, Zone 0/1/2) for facilities handling flammable vapors.
FDA GMP
21 CFR Part 210/211 — Pharmaceutical
API aerosol control · Cross-contamination
FDA 21 CFR Part 210/211 mandates air quality controls in pharmaceutical manufacturing to prevent cross-contamination between API compounds and between active and inactive ingredients. Iodine Air Systems provides HEPA-grade API aerosol control with GMP-compliant documentation packages.
OSHA PSM
29 CFR 1910.119 — Process Safety
Highly hazardous chemicals threshold
OSHA Process Safety Management applies to facilities with highly hazardous chemicals above threshold quantities. PSM compliance requires mechanical integrity programs for air treatment equipment. Our systems include installation, inspection, and maintenance documentation packages supporting PSM compliance.
SEMI F15
Semiconductor Gas Safety
Toxic gas detection · Fab cleanroom
SEMI F15 governs toxic gas detection and abatement in semiconductor fabrication. Our semiconductor facility systems supplement point-of-use scrubbers with general ventilation treatment of process gas decomposition products, protecting cleanroom environments from background toxic gas accumulation.
// Engineering FAQ
Chemical Facility Questions Answered
Iodine-catalyzed filtration removes a broad spectrum of chemical contaminants: VOCs — benzene, toluene, xylene, formaldehyde, methanol, acetone, vinyl chloride, styrene; Process gases — hydrogen sulfide (H₂S), ammonia, mercaptans, sulfur dioxide; Semiconductor gases — silane, arsine, phosphine decomposition products; Pharmaceutical solvents — methanol, ethanol, IPA, acetonitrile. Treatability depends on compound-specific I₂ oxidation kinetics, concentration, contact time, and humidity. Contact our engineering team with your chemical inventory for a site-specific treatability assessment: (650) 646-5199.
OSHA PEL compliance requires maintaining contaminant concentrations below Table Z-1 thresholds at all operating conditions. Our process: (1) Facility chemical inventory assessment — every contaminant and its concentration; (2) Engineering design — I₂ loading, contact time, MERV rating, flow rate; (3) Installation in your HVAC; (4) Post-installation air quality testing — industrial hygienist sampling against PEL thresholds; (5) Documentation package — engineering specifications, test results, maintenance schedule — for your OSHA compliance file. Call: (650) 646-5199.
Yes, with appropriate engineering design. For flammable vapor environments: filter housings specified in 316 SS; explosion-proof electrical components rated for the applicable hazardous location classification (NEC 505/506, Class I Division 1/2 or Zone 0/1/2 per IEC 60079); bonding and grounding per NFPA 77; inlet spark arrestors where required. The iodine-impregnated filter media does not act as an ignition source. For LEL (Lower Explosive Limit) alarm integration, we coordinate with your process safety team. Contact: (650) 646-5199.
Most chemical facility HVAC filtration integrations are completed within 48–72 hours. Our installation process: Week 1: Site assessment, HVAC documentation review, contaminant assessment. Weeks 2–3: System design, fabrication. Day 1 of installation: Scheduled HVAC maintenance window — existing filter housing removal. Day 2: New filter housing installation, ductwork connections, electrical connections. Day 3: Commissioning, initial air quality sampling, documentation. Most installations can be scheduled during planned maintenance shutdowns, minimizing production impact. Call to schedule: (650) 646-5199.
// System Design Reference
Chemical Facility Design Parameters
// IODINE AIR SYSTEMS — Chemical & Industrial Application Design Reference // Parameters below are design targets — site-specific engineering required
Primary mechanism = I₂ (elemental iodine) catalytic oxidation of VOCs + gas neutralization Secondary mechanism = HEPA-grade particulate capture ≥99.97% @ 0.3 μm Target compounds = VOCs · HAPs · H₂S · NH₃ · Mercaptans · Silane · API aerosols VOC removal rate = 98.4%// compound and concentration dependent Installation type = In-duct HVAC integration · Custom filter housing · Return air treatment Material options = 304 SS standard · 316 SS for corrosive / halide environments Electrical rating = Standard or ATEX/IECEx/NEC rated for hazardous locations Compliance target = OSHA 29 CFR 1910.1000 PEL · EPA 40 CFR 63 NESHAP · NFPA 72 Filter change = Application-dependent// typically 6–18 months Documentation = OSHA compliance file · EPA permit support · GMP batch record Lead time = Custom systems 4–8 weeks · Portable units available faster
// OSHA · EPA CAA · NFPA · FDA GMP · SEMI F15 · Compliant Systems
Your Facility. Our Expertise.
Chemical & industrial air quality consultation · Engineering specification · (650) 646-5199 · sales@iodineairsystems.com
