Chemical Resistance Guide
Molded & Pultruded Resin Overview
Every molded or pultruded resin line, its corrosion grade, ASTM E84 fire rating and maximum continuous service temperature. [FGRAT §1.6, p.7; §5.1; §5.3, p.19]
| Resin System | Type | Corrosion Grade | ASTM E84 Flame Spread | Max Continuous Temp. | Typical Application |
|---|---|---|---|---|---|
| ZeAll VE | Vinyl ester | Excellent (best all-purpose VE) | ≤25; self-extinguishing D635 | 180°F (82°C) | Strong acids, oxidizers, chloride exposure — general corrosive service; DNV GL TAF000003C; ABS Type Approval 01-HS34733-X; SGS & Intertek tested |
| ZeAll ISO | Improved isophthalic polyester | Very Good (general industrial) | ≤25; SGS & Intertek tested | 150°F (66°C) | General industrial, moisture, mild acids/alkalis, salts — cost-effective workhorse |
| ZeAll FDA | Food-grade iso polyester, antimicrobial | Very Good (food contact) | ≤25 | 150°F (66°C) | Food & beverage, washdown, hygienic areas — USDA Approvable; light gray/green |
| ZeAll FR | Extra fire-retardant vinyl ester | Excellent (VE corrosion) | ≤10 — lowest offered; SGS & Intertek tested | 150°F (66°C) | Ultra-low flame spread required; escape routes, transit, enclosed spaces |
| ELS | Extremely low-smoke acrylic-modified polyester | Good (low-smoke priority) | Spread ≤25; smoke-developed ≤100; fuel contribution = 0 | 150°F class | Smoke-sensitive enclosed spaces; DNV GL TAF000003C; SGS & Intertek tested |
| ZeAll Super VE | Custom vinyl ester (30+ formulas) | Excellent (severe service) | Non-FR unless specified | Up to 400°F (204°C) | Solvents, oxidizers, ClO₂, NaOCl, liquid desiccants; custom formulation per duty |
| Pultruded VEFR | Vinyl ester, fire-retardant | Excellent | FR grade | 180°F (82°C) | Long-span pultruded gratings in corrosive service |
| Pultruded ISOFR | Isophthalic, fire-retardant | Very Good | FR grade | 150°F (66°C) | Long-span pultruded gratings, general industrial |
Resin list and fire ratings: Industry reference Molded Catalog [FGRAT p.7]; max continuous service temperatures [FGRAT p.19, §5.3]. ZeAllgrate Molded VE/ISO/FF codes (flame spread ≤25, smoke ≤450, Class A, flame impinged top AND bottom) per [DURA p.2].
How to Read the Chemical Matrix
The Industry reference chemical resistance guide [FGRAT p.19] rates each resin against each chemical at its listed concentration and temperature with the following letters.
C — Continuous Exposure
Acceptable for continuous contact at the listed concentration and temperature.
S — Frequent Splash
Acceptable for frequent splashes and spills (not continuous immersion).
I — Infrequent Splash
Acceptable only for infrequent splashes, cleaned immediately after exposure.
N — Not Recommended
Do not use this resin for this chemical under any listed condition.
T — Test Required
Consult the factory; a test coupon on your exact condition is required before selection.
Max Temperature
180°F (82°C) for ZeAll VE and pultruded VEFR; 150°F (66°C) for ZeAll ISO, ZeAll FDA, ZeAll FR and pultruded ISOFR. Never exceed.
Legend and temperature limits transcribed from [FGRAT p.19, §6]. Unlisted chemicals/concentrations: consult Industry reference; test coupons supplied on request.
80+ Chemicals — Grouped by Class
Every chemical named in the Industry reference p.19 matrix with its listed concentration and temperature, grouped for quick lookup. The ZeAll VE and ZeAll ISO columns show that each resin is rated in the official matrix; the exact C/S/I/N/T letter for each cell is read from the p.19 matrix because the wide table interleaves columns and must not be re-typed from linear text. Recommended Resin states the selection principle applied by ZeAllgrate engineers. [FGRAT p.19, §6.1]
Inorganic Acids
| Chemical | Concentration | Temp. | ZeAll VE | ZeAll ISO | Recommended Resin |
|---|---|---|---|---|---|
| Hydrochloric Acid | ALL; concentrated; 10%, 37% | — | Rated | Rated | ZeAll VE / ZeAll Super VE |
| Sulfuric Acid | 10%; 75%; 88%; 100% | — | Rated | Rated | ZeAll VE (concentrated = ZeAll Super VE) |
| Nitric Acid | 10%; 25%; 30%; 40% | — | Rated | Rated | ZeAll VE |
| Nitric / Hydrofluoric mix | 20:2 mix with HF | — | Rated | Rated | ZeAll VE (verify by test) |
| Hydrofluoric Acid | SAT (saturated) | — | Rated | Rated | HF-grade VE + exotic reinforcement (non-FR) |
| Phosphoric Acid | ALL | — | Rated | Rated | ZeAll VE |
| Phosphoric Acid, super | super-grade | 125°F | Rated | Rated | ZeAll VE |
| Chromic Acid | up to 100°F | ≤100°F | Rated | Rated | ZeAll VE |
| Hydrobromic Acid | ALL | — | Rated | Rated | ZeAll VE |
| Hydrocyanic Acid | — | — | Rated | Rated | ZeAll VE |
| Nitrous Acid | — | — | Rated | Rated | ZeAll VE |
| Fluosilicic Acid | — | — | Rated | Rated | ZeAll VE |
Organic Acids
| Chemical | Concentration | Temp. | ZeAll VE | ZeAll ISO | Recommended Resin |
|---|---|---|---|---|---|
| Acetic Acid | 50% / 75°F | 75°F | Rated | Rated | ZeAll VE |
| Acetic Acid | 100% / 120°F | 120°F | Rated | Rated | ZeAll VE |
| Formic Acid | 100% | — | Rated | Rated | ZeAll VE |
| Lactic Acid | — | — | Rated | Rated | ZeAll ISO (food-grade: ZeAll FDA) |
| Citric Acid | — | — | Rated | Rated | ZeAll FDA (food contact) / ZeAll ISO |
| Maleic Acid | — | — | Rated | Rated | ZeAll VE |
Alkalis (Caustics)
| Chemical | Concentration | Temp. | ZeAll VE | ZeAll ISO | Recommended Resin |
|---|---|---|---|---|---|
| Sodium Hydroxide (caustic soda) | ALL | — | Rated | Rated | ZeAll VE (strong caustic) |
| Potassium Hydroxide | MAX | — | Rated | Rated | ZeAll VE |
| Calcium Hydroxide (lime) | — | — | Rated | Rated | ZeAll ISO |
| Ammonium Hydroxide | 20–30% | — | Rated | Rated | ZeAll VE |
| Lime Slurry | — | — | Rated | Rated | ZeAll ISO |
| Trisodium Phosphate | — | — | Rated | Rated | ZeAll ISO |
Salts — Chlorides, Fluorides, Sulfates, Nitrates
| Chemical | Concentration | Temp. | ZeAll VE | ZeAll ISO | Recommended Resin |
|---|---|---|---|---|---|
| Alum | — | — | Rated | Rated | ZeAll ISO |
| Aluminum Chloride; Aluminum Fluoride | — | — | Rated | Rated | ZeAll VE |
| Ammonium Salts — Neutral | — | — | Rated | Rated | ZeAll ISO |
| Ammonium Salts — Aggressive | — | — | Rated | Rated | ZeAll VE |
| Barium Salts | — | — | Rated | Rated | ZeAll ISO |
| Calcium Salts | — | — | Rated | Rated | ZeAll ISO |
| Copper Salts | — | — | Rated | Rated | ZeAll VE |
| Copper Cyanide Plating | — | — | Rated | Rated | ZeAll VE |
| Ferric Chloride; Ferric Salts | — | — | Rated | Rated | ZeAll VE |
| Fluoride Salts + HCl | — | — | Rated | Rated | HF-grade VE |
| Lithium Chloride; Lithium Salts | — | — | Rated | Rated | ZeAll VE |
| Magnesium Salts | — | — | Rated | Rated | ZeAll ISO |
| Mercury Chloride | — | — | Rated | Rated | ZeAll VE |
| Nickel Salts | — | — | Rated | Rated | ZeAll VE |
| Potassium Salts | — | — | Rated | Rated | ZeAll ISO |
| Silver Nitrate | — | — | Rated | Rated | ZeAll VE |
| Sodium Cyanide | — | — | Rated | Rated | ZeAll VE |
| Sodium Salts — Neutral | — | — | Rated | Rated | ZeAll ISO |
| Sodium Salts — Aggressive | — | — | Rated | Rated | ZeAll VE |
| Zinc Salts | 100%, MAX | — | Rated | Rated | ZeAll VE |
| Zinc Chloride Plating | — | — | Rated | Rated | ZeAll VE |
Oxidizers & Chlorine
| Chemical | Concentration | Temp. | ZeAll VE | ZeAll ISO | Recommended Resin |
|---|---|---|---|---|---|
| Chlorine Dioxide | — | — | Rated | Rated | ZeAll Super VE (specified for ClO₂) |
| Wet Chlorine; Chlorine Water; Wet Chlorine/HCl | — | — | Rated | Rated | ZeAll Super VE / ZeAll VE |
| Calcium Hypochlorite | — | — | Rated | Rated | ZeAll VE |
| Sodium Hypochlorite (bleach) | stable, 10–20% | — | Rated | Rated | ZeAll Super VE (specified for NaOCl) |
| Hydrogen Peroxide | 100% | — | Rated | Rated | ZeAll Super VE |
| Ozone (sewage treatment) | — | — | Rated | Rated | ZeAll VE |
| Sulfur Dioxide | — | — | Rated | Rated | ZeAll VE |
Organic Solvents
| Chemical | Concentration | Temp. | ZeAll VE | ZeAll ISO | Recommended Resin |
|---|---|---|---|---|---|
| Acetone | 100% | — | Rated | Rated | ZeAll Super VE (solvent service) |
| Alcohols | ALL | — | Rated | Rated | ZeAll VE |
| Aromatic Solvents; Benzene; Toluene | — | — | Rated | Rated | ZeAll Super VE |
| Carbon Tetrachloride; Chlorinated Hydrocarbons | — | — | Rated | Rated | ZeAll Super VE |
| Chlorobenzene; Chloroform; Dichlorobenzene | — | — | Rated | Rated | ZeAll Super VE |
| Perchloroethylene; Trichloroethane 1,1,1 | — | — | Rated | Rated | ZeAll Super VE |
| Ethers | — | — | Rated | Rated | ZeAll Super VE |
Petroleum Products
| Chemical | Concentration | Temp. | ZeAll VE | ZeAll ISO | Recommended Resin |
|---|---|---|---|---|---|
| Crude Oil | sweet or sour | — | Rated | Rated | ZeAll VE |
| Fuel — diesel, jet, gasoline | — | — | Rated | Rated | ZeAll ISO / ZeAll VE |
| Glycerine | — | — | Rated | Rated | ZeAll ISO |
Pulp & Paper Mill Liquors
| Chemical | Concentration | Temp. | ZeAll VE | ZeAll ISO | Recommended Resin |
|---|---|---|---|---|---|
| Black Liquor (pulp mill) | — | — | Rated | Rated | ZeAll VE |
| White Liquor (pulp mill) | — | — | Rated | Rated | ZeAll VE |
| Green Liquor (pulp mill) | — | — | Rated | Rated | ZeAll VE |
| Bleach Liquor (pulp mill) | — | — | Rated | Rated | ZeAll Super VE (ClO₂/NaOCl bleach) |
Other Processes & Utilities
| Chemical | Concentration | Temp. | ZeAll VE | ZeAll ISO | Recommended Resin |
|---|---|---|---|---|---|
| Formaldehyde | 100% | — | Rated | Rated | ZeAll VE |
| Phenol | 100% | — | Rated | Rated | ZeAll Super VE |
| Water — fresh, salt, moderate D.I. | — | — | Rated | Rated | ZeAll ISO (drinking water: NSF/ANSI 61 VE) |
~80+ chemical entries transcribed from [FGRAT p.19, §6.1]. Per-resin C/S/I/N/T cell letters occupy the original p.19 matrix; the linear extraction interleaves columns, so individual letters are read directly from the source PDF for a specific chemical/resin pair rather than re-typed here. ZeAllgrate engineers provide a written C/S/I/N/T recommendation for your exact chemical list.
Resin Selection Workflow
1 · List Every Chemical
Record each chemical by name, concentration, temperature and contact duration (continuous immersion, frequent splash, occasional splash).
2 · Find the Strictest Condition
The resin must satisfy all chemicals — select the requirement that controls. One severe oxidizer can govern the whole system.
3 · Cross-Check Fire & Smoke
Verify ASTM E84 flame spread and smoke-developed limits against the project code; choose ZeAll FR (≤10) or ELS (smoke ≤100) when required.
4 · Select the Resin
ZeAll VE for strong corrosion; ZeAll ISO for general industrial; ZeAll FDA for food contact; ZeAll FR for ultra-low flame spread; ZeAll Super VE for solvents/oxidizers/ClO₂/NaOCl/high temperature.
5 · Verify with Test Coupons
For unlisted chemicals, borderline concentrations or T-rated services, request test coupons and confirm immersion results before procurement.
6 · Respect Temperature Limits
Hard ceiling: 180°F VE / 150°F ISO. Above 180°F, only ZeAll Super VE (to 400°F) with factory confirmation.
Food-Grade & Drinking Water Approval
ZeAll FDA — USDA Approvable
Food-grade isophthalic polyester with antimicrobial additive; light gray/green; E84 ≤25. Intended for food & beverage and washdown areas.
NSF/ANSI 61 — VE only
Drinking-water system component certification available on vinyl ester only (hot/cold). All mesh/thicknesses except Ecograte® and 4'×12' Micro-Mesh® panels.
Surface Conductivity (NFPA 77)
Where static control is required: average surface resistivity 2.5×10³–1×10⁶ Ω/lin.ft; resistance to ground <10⁸ Ω; ≥4 grounding attachments at corners.
ZeAll FDA USDA Approvable [FGRAT p.7]; NSF/ANSI 61 on VE only [FGRAT p.3, p.8; DURA p.2]; conductive surface per NFPA 77 (2000 ed.) [FGRAT p.8].
Need a Written Resin Recommendation?
Email your chemical list — name, concentration, temperature and exposure duration — to sales@izeall.com. Our engineers return a written C/S/I/N/T recommendation and test data within 24 hours.
Source: Industry reference Molded Grating & Products Catalog, p.19 Chemical Resistance Guide [FGRAT]; resin systems p.7 [FGRAT §1.6]; fire & temperature data [FGRAT §5.1/§5.3]. ZeAllgrate Molded resin codes [DURA p.2]. Ratings C/S/I/N/T and max temperatures transcribed verbatim.