Why is baking soda (NaHCO₃) neutralization dangerous for concentrated sulfuric acid spills, and what neutralizing agent should be used instead?

The most common advice for small acid spills — 'sprinkle baking soda to neutralize' — is appropriate for dilute hydrochloric or acetic acid, but it becomes hazardous when applied to concentrated sulfuric acid (H₂SO₄ ≥30% concentration, such as lead-acid battery electrolyte at 30–38% H₂SO₄ by weight). The reaction mechanism and exotherm: NaHCO₃ (sodium bicarbonate, baking soda) neutralizes H₂SO₄ via: 2NaHCO₃ + H₂SO₄ → Na₂SO₄ + 2H₂O + 2CO₂ (gas) The hazard arises from two simultaneous effects: 1. Heat of neutralization: The neutralization of strong acid with a strong base or base equivalent (carbonate) is highly exothermic. The heat of neutralization for H₂SO₄ is approximately −57.8 kJ/mol (first ionization) and −41.7 kJ/mol (second ionization) = approximately −99.5 kJ/mol total for complete neutralization to Na₂SO₄. For concentrated H₂SO₄ at 38% (SG 1.28), a 1-liter battery spill contains approximately 5 mol H₂SO₄ and will release ~500 kJ of heat on complete neutralization — enough to heat 1 liter of water by 120°C. The released heat converts water in the spill puddle to steam. 2. CO₂ gas evolution: NaHCO₃ releases 2 mol CO₂ per mol H₂SO₄ neutralized; the rapid CO₂ evolution into the heating liquid causes vigorous bubbling and aerosol generation — projecting acid droplets (the spill has NOT been fully neutralized when bubbling begins) into the breathing zone and onto the responder's PPE. This is the critical failure mode: a responder adds baking soda to a concentrated H₂SO₄ spill and sees vigorous reaction, believing it is 'working' — but the acid aerosol is being projected onto the face shield, gloves, and any exposed skin. Na₂CO₃ (sodium carbonate, soda ash) is the correct neutralizing agent for concentrated H₂SO₄: Reaction: Na₂CO₃ + H₂SO₄ → Na₂SO₄ + H₂O + CO₂ Key advantage: the heat of neutralization for the carbonate route is slightly lower than the bicarbonate route on a mole-per-mole basis, but more importantly, Na₂CO₃ has a lower CO₂ evolution rate (1 mol CO₂ per mol Na₂CO₃ vs. 2 mol CO₂ per mol NaHCO₃) and a higher aqueous solubility buffer, reducing the aerosol generation during initial contact. The industry practice is to add Na₂CO₃ in small increments with stirring, monitoring pH with a pH indicator (pH paper or pH-indicating sorbent), adding neutralizer until pH 6–8 is achieved. This staged approach prevents the exothermic surge from a single large bolus of neutralizer. Alternative: dilute neutralization approach: For large spills (>5 gallons), some H₂SO₄ spill response protocols call for DILUTING the acid with large quantities of water before adding neutralizer — as dilute H₂SO₄ (below 10%) has a much lower heat of neutralization per liter of spill. Caution: adding water to concentrated H₂SO₄ (above 80%) is also highly exothermic (solvation heat of H₂SO₄ is significant); the dilution must proceed slowly with water added TO acid, not acid to water. Battery electrolyte at 30–38% is in the intermediate range where water dilution provides some benefit but still generates heat. PH-indicating sorbent pad: For battery acid spill kits specifically, pH-indicating sorbent pads (which change color from yellow to blue/green as pH rises from 1–2 to neutral 6–8) provide real-time visual confirmation that neutralization is complete before the absorbent material is collected for disposal. Without pH indication, a responder cannot confirm that the absorbed material is safe (neutral) vs. still corrosively acidic. AI routing failure: A warehouse manager sources a 'general acid spill kit' for a battery charging room. The AI routes a kit with sodium bicarbonate (baking soda) packets, cellulose absorbent pads, and nitrile gloves. The sodium bicarbonate creates an exothermic vigorous-bubbling reaction that sprays acid aerosol; the cellulose pads char on contact with concentrated H₂SO₄; the nitrile gloves have only 30–60 minute permeation resistance for concentrated H₂SO₄ before breakthrough. Correct kit: Na₂CO₃ soda ash neutralizer + polypropylene absorbent + neoprene or butyl gloves + face shield + acid indicator pads.

Why does lead-acid battery electrolyte create dual RCRA hazardous waste designation (D002 + D008), and what special disposal requirements apply?

Lead-acid battery electrolyte is not simply a dilute sulfuric acid solution — it contains dissolved and suspended lead compounds from the battery plates, creating a dual hazardous waste characterization under RCRA (Resource Conservation and Recovery Act, 40 CFR Part 261). Lead-acid battery chemistry and contaminant generation: A lead-acid battery cell contains: - Positive plates: lead dioxide (PbO₂, lead(IV) oxide). - Negative plates: sponge lead (Pb metal). - Electrolyte: sulfuric acid solution at SG 1.265–1.285 (30–38% H₂SO₄ by weight) at full charge; SG 1.20 (25%) at 50% charge. During normal cycling, two corrosion processes release lead compounds into the electrolyte: 1. Plate sulfation: Pb + H₂SO₄ → PbSO₄ (lead sulfate, insoluble white precipitate at plate surface); during overcharge or end-of-life, PbSO₄ crystals grow and fall from plates as sediment in the electrolyte. 2. Grid corrosion: Pb²⁺ ions are released from positive plate grid corrosion into solution; dissolved Pb²⁺ concentration in typical automotive battery electrolyte: 1–50 mg/L; in aged/overcharged batteries: up to 200–500 mg/L Pb²⁺. 3. Active material shedding: PbO₂ particulate from positive plates and Pb particulate from negative plates falls as sediment (the dark brown/black sludge at the bottom of a removed battery cell). RCRA hazardous waste designations: - D002 (Corrosive): defined as aqueous waste with pH ≤2 (40 CFR 261.22(a)(1)) or a liquid that corrodes steel at >6.35 mm/year at 55°C; battery electrolyte at 30–38% H₂SO₄ has pH of approximately 0–0.5 — well within D002 corrosive characterization. - D008 (Lead): defined as waste with TCLP (Toxicity Characteristic Leaching Procedure, EPA SW-846 Method 1311) lead leachate concentration ≥5 mg/L; battery electrolyte spills containing PbSO₄ sediment and dissolved Pb²⁺ routinely exceed the 5 mg/L TCLP threshold; a spent battery electrolyte spill absorbed onto a pad is a D008 Listed Hazardous Waste requiring EPA-licensed hazardous waste transporter for disposal. Used Battery Exclusion (40 CFR 261.6(a)(2)(ii)): Whole spent lead-acid batteries being sent for reclamation (battery recyclers) are conditionally excluded from hazardous waste requirements under the Used Battery Exclusion — they are universal wastes per 40 CFR Part 273. However, the electrolyte SPILL material (absorbed spill waste from a battery acid spill in a charging room or forklift battery bay) is NOT covered by the universal waste exclusion — it is a characteristically hazardous waste (D002 + D008) requiring: 1. Generation quantity accumulation limits (SQG: 100 kg–1000 kg/month, LQG: >1000 kg/month) before off-site disposal is required. 2. Proper waste accumulation container labeling: 'Hazardous Waste' + EPA waste codes (D002, D008) + accumulation start date. 3. Storage in compatible container (polypropylene drum or HDPE container — not steel, which corrodes from H₂SO₄). 4. EPA-licensed hazardous waste transporter for off-site disposal or treatment. 5. Land disposal restrictions (LDR) under 40 CFR Part 268: D002/D008 combined waste requires treatment (neutralization + lead removal/stabilization) before landfill disposal. OSHA 29 CFR 1910.178(g) — Industrial Truck Battery Charging: OSHA 1910.178(g)(2): 'A conveyor, overhead hoist, or equivalent material handling equipment shall be provided for handling batteries' — and g(5): 'Provisions shall be made for flushing and neutralizing spilled electrolyte.' The OSHA requirement for H₂SO₄ neutralization capability in battery charging rooms establishes a regulatory expectation that spill response materials are present — but OSHA does not specify the kit contents. The spill_kit.* namespace encodes what is actually needed. PPE for battery acid spill response: - Face shield (not just safety glasses): H₂SO₄ at 30–38% causes severe eye injury on splash; safety glasses are insufficient for the exothermic reaction aerosolization risk; full-coverage face shield required. - Chemical splash goggles: in addition to face shield for handling concentrated acid or during initial neutralization reaction when aerosol generation is highest. - Gloves: neoprene (≥480 min breakthrough at 37% H₂SO₄ per ASTM F739) or butyl rubber (>480 min); nitrile has 30–60 min breakthrough at 37% H₂SO₄ — inadequate for extended clean-up; natural rubber also acceptable (>480 min for dilute H₂SO₄). - Rubber apron: to protect legs and torso from splash during neutralization. - Chemical-resistant boot covers or boots: to prevent acid from penetrating shoe uppers during cleanup.

What are the spill_kit.* namespace fields for sulfuric acid battery electrolyte spill encoding, and how do acid_concentration, exothermic_neutralization_risk, lead_contamination, and sorbent_type drive kit selection?

spill_kit.* namespace fields for sulfuric acid battery acid spill routing: spill_kit.acid_type (string — h2so4_concentrated / h2so4_dilute / hcl / hno3 / hf / acetic / phosphoric / other): - 'h2so4_concentrated': H₂SO₄ ≥30% by weight (battery electrolyte, laboratory sulfuric acid, industrial concentrated H₂SO₄); exothermic neutralization hazard with NaHCO₃; polypropylene sorbent required; neoprene/butyl gloves required; face shield mandatory. - 'h2so4_dilute': H₂SO₄ <10% by weight; lower exothermic risk; cellulose sorbent may be acceptable if concentration is confirmed <10%; standard acid spill kit with sodium bicarbonate and general absorbent may suffice. - 'hf': hydrofluoric acid — entirely different response (calcium gluconate gel antidote, special absorbent, systemic toxicity risk even from small splashes); see HF-specific namespace page. - 'hcl': hydrochloric acid — vapor hazard from HCl gas evolution; NaHCO₃ neutralization lower exotherm than H₂SO₄; vinegar/acid neutralization not recommended. - 'hno3': nitric acid — oxidizer risk in addition to corrosive; specialized response. spill_kit.exothermic_neutralization_risk (string — high_nahco3_contraindicated / moderate_use_staged / low): - 'high_nahco3_contraindicated': H₂SO₄ ≥30%; NaHCO₃ neutralization produces dangerous exotherm and aerosol; require Na₂CO₃ (soda ash) or Ca(OH)₂ (lime slurry) as neutralizing agent; stage addition in small increments with pH monitoring. - 'moderate_use_staged': H₂SO₄ 10–30%; NaHCO₃ generates heat and CO₂ bubbling but at reduced severity; staged addition with pH monitoring; Na₂CO₃ preferred. - 'low': H₂SO₄ <10%; NaHCO₃ neutralization safe with standard precautions; standard acid spill kit adequate. spill_kit.lead_contamination (string — yes_rcra_d008 / possible / no): - 'yes_rcra_d008': spill source is lead-acid battery electrolyte; dissolved Pb²⁺ and PbSO₄ particulate present; absorbed spill waste is RCRA D008 hazardous waste; requires EPA-licensed hazardous waste disposal; do NOT dispose in regular trash or down drain. - 'possible': spill from battery adjacent equipment (forklift floor, battery charging area surface runoff); lead contamination level unknown; collect sample for TCLP analysis before disposal pathway determination. - 'no': non-lead acid source; D002 characterization only (if pH ≤2); standard corrosive waste disposal. spill_kit.sorbent_type (string — polypropylene_only / cellulose_ok / clay_vermiculite / universal): - 'polypropylene_only': H₂SO₄ ≥30%; cellulose (paper-based) absorbent pads char and decompose under concentrated H₂SO₄ (dehydrating action); polypropylene (PP) absorbent pads/pillows are chemically inert to H₂SO₄ and pH-stable across the acid concentration range; also oil-repellent (polypropylene is hydrophobic/oleophilic) which means polypropylene will absorb the acid electrolyte but not plain water separately — use 'universal' PP sorbent (hydrophilic-treated PP) for aqueous acid. - 'cellulose_ok': appropriate only for dilute acids (<10%); standard white cellulose absorbent pads used in most general-purpose spill kits; not suitable for concentrated H₂SO₄. - 'clay_vermiculite': dry absorbent granules (clay, vermiculite, diatomite); chemically inert to H₂SO₄; acceptable for contained spills; neutralize before collection; dispose as hazardous waste if lead-contaminated. spill_kit.ph_indicator_required (string — yes / no): - 'yes': spill kit must include pH indicator (pH paper, pH-indicating sorbent, or portable pH meter) to confirm neutralization is complete (pH 6–8) before collected waste is disposed; critical for concentrated acid spills where neutralization completeness cannot be confirmed visually. spill_kit.glove_type_required (string — neoprene_min / butyl_preferred / nitrile_ok / any): - 'neoprene_min': for H₂SO₄ 30–38%; neoprene provides ≥480 min breakthrough per ASTM F739; minimum glove for battery acid cleanup; nitrile (30–60 min) inadequate for extended cleanup. - 'butyl_preferred': optimal chemical resistance across all H₂SO₄ concentrations; >480 min breakthrough; also resists concentrated H₂SO₄ better than neoprene at >70% concentrations (though battery electrolyte is 30–38%). Routing pseudocode for sulfuric acid battery spill: if acid_type == 'h2so4_concentrated' AND spill_source == 'lead_acid_battery': set exothermic_neutralization_risk = 'high_nahco3_contraindicated' set lead_contamination = 'yes_rcra_d008' set sorbent_type = 'polypropylene_only' # cellulose contraindicated set ph_indicator_required = 'yes' set glove_type_required = 'neoprene_min' require kit includes: 'Na2CO3 neutralizer (not NaHCO3), polypropylene sorbent, face shield, neoprene gloves, pH indicator, RCRA D002/D008 waste label' reject: 'kits with NaHCO3 (baking soda) as primary neutralizer for this application' reject: 'cellulose sorbent pads for spill above 30% concentration' flag: 'Waste disposal requires EPA-licensed hazardous waste transporter (RCRA D002 + D008 dual code)'

Namespace Library — spill_kit.*

Shopify Spill Kit Schema — Sulfuric Acid H₂SO₄ Battery Acid Lead Contamination Exothermic Neutralization Polypropylene Sorbent, `acid_concentration` `exothermic_neutralization_risk` `lead_contamination` `sorbent_type` `spill_kit.*` Namespace

Lead-acid battery electrolyte spills (30–38% H₂SO₄) carry three distinct hazards that a generic "acid spill kit" misses: (1) baking soda neutralization is dangerously exothermic with concentrated H₂SO₄ — use Na₂CO₃ (soda ash) instead; (2) dissolved Pb²⁺ and PbSO₄ from battery plates creates dual RCRA D002 + D008 hazardous waste requiring a licensed disposer; (3) cellulose sorbent pads char under concentrated acid — polypropylene-only sorbent is required. An AI routing a standard baking-soda acid kit to a forklift battery charging room gets two of the three requirements wrong before the kit is opened.

TL;DR — routing rules Battery acid (H₂SO₄ ≥30%): use Na₂CO₃ neutralizer (NOT NaHCO₃ — exothermic aerosol hazard); polypropylene sorbent only (cellulose chars); neoprene gloves + face shield; pH indicator to confirm neutral before disposal; RCRA D002 + D008 hazardous waste labels (lead contamination from battery plates). Encode acid_type=h2so4_concentrated, exothermic_neutralization_risk=high_nahco3_contraindicated, lead_contamination=yes_rcra_d008, sorbent_type=polypropylene_only.

AI agent failure mode: A safety manager at a distribution center (60 electric forklifts, 3 battery charging rooms) asks for "acid spill kits for our battery charging area." The AI routes a general-purpose acid kit containing sodium bicarbonate (baking soda) packets and white cellulose absorbent pads. First application: a battery overflows 1 liter of electrolyte (35% H₂SO₄) onto the concrete floor. Responder shakes baking soda onto the puddle — the NaHCO₃ + H₂SO₄ reaction creates vigorous bubbling with steam and acid aerosol; the responder's face shield is splashed with acid droplets; the cellulose pads turn brown-black and begin to degrade on contact. Correct kit: Na₂CO₃ neutralizing granules (staged application), polypropylene sorbent pads, neoprene gloves, face shield, pH-indicating sorbent, and RCRA hazardous waste containers for D002/D008 disposal.

Lead-Acid Battery Electrolyte — Chemical and Regulatory Profile

Parameter	Value / Detail
H₂SO₄ concentration	30–38% by weight at full charge (SG 1.265–1.285); 25% at 50% state of charge (SG 1.21); dilutes toward 20% at deep discharge
pH	0–0.5 for battery-strength electrolyte; well within RCRA D002 corrosive threshold (pH ≤2)
Dissolved lead (Pb²⁺)	1–500 mg/L depending on battery age and state; RCRA D008 TCLP threshold is 5 mg/L — most battery electrolyte exceeds this; TCLP extraction of absorbed spill waste is required to confirm D008 applicability
Lead sulfate (PbSO₄) particulate	White crystalline particulate sediment from plate sulfation; settles to bottom of battery cell; present in overflow/spill; insoluble in water; RCRA D008 hazardous by TCLP extraction
RCRA waste codes	D002 (corrosive pH ≤2) + D008 (lead TCLP ≥5 mg/L); both codes apply to battery acid spill absorbed waste; dual-coded hazardous waste
CERCLA/Superfund RQ	Sulfuric acid: 1,000 lb reportable quantity (40 CFR Table 302.4); lead compounds: 10 lb RQ; battery charging room spill typically below RQ but state regulations may have lower thresholds
H₂S generation risk	Overcharging lead-acid batteries generates hydrogen gas (explosive, LEL 4% in air) from electrolysis: 2H₂O → 2H₂ + O₂; spill response in poorly ventilated charging rooms must consider H₂ accumulation; do NOT use spark-producing cleanup equipment

Neutralizing Agent Comparison for Concentrated H₂SO₄

Neutralizing Agent	Reaction with H₂SO₄	Exotherm / Gas	Suitability for Battery Acid	Application Method
NaHCO₃ (baking soda)	2NaHCO₃ + H₂SO₄ → Na₂SO₄ + 2H₂O + 2CO₂	HIGH exotherm; 2 mol CO₂ per mol H₂SO₄; violent bubbling; acid aerosol generation; steam at concentrated acid	CONTRAINDICATED for ≥30% H₂SO₄	Do NOT use for battery acid
Na₂CO₃ (soda ash)	Na₂CO₃ + H₂SO₄ → Na₂SO₄ + H₂O + CO₂	Moderate exotherm; 1 mol CO₂ per mol H₂SO₄; controlled bubbling when added incrementally; much less aerosol than NaHCO₃	PREFERRED for battery acid; add in small increments; monitor pH	Sprinkle dry granules around perimeter first; work toward center; check pH with indicator after each addition
Ca(OH)₂ (lime slurry)	Ca(OH)₂ + H₂SO₄ → CaSO₄ + 2H₂O	Lower exotherm than Na₂CO₃; no CO₂ gas evolution; CaSO₄ (gypsum) precipitate forms	Good for large spills; precipitate requires disposal; can clog drains	Lime slurry added to perimeter; gentle mixing; no CO₂ aerosol driver
NaOH (caustic soda)	2NaOH + H₂SO₄ → Na₂SO₄ + 2H₂O	VERY HIGH exotherm; no gas evolution but extreme temperature rise at high concentration neutralization; risk of boiling; generates alkaline overshoot (pH >14) if overdosed	NOT recommended for spill response; laboratory titration use only	Do NOT use for spill neutralization

Sorbent Material Compatibility with Concentrated H₂SO₄

Sorbent Material	Behavior Under ≥30% H₂SO₄	Suitable?
Polypropylene (PP) nonwoven	Chemically inert to H₂SO₄ across all concentrations (PP is non-polar polyolefin; no ester/amide bonds susceptible to acid hydrolysis); absorbs acid solution without degradation; stable for collection and disposal	Yes — primary choice
Cellulose/paper-based pads	Concentrated H₂SO₄ acts as a dehydrating agent (removes H₂O from cellulose glucose polymer chains); cellulose turns brown-black and carbonizes within seconds to minutes; structural integrity is lost; pad cannot be collected without disintegrating	NO — contraindicated for ≥30% H₂SO₄
Clay granules (kitty litter type)	Chemically stable to H₂SO₄; absorbs liquid; does not degrade; leads to gypsum-like residue if lime-neutralized first; acceptable for dry containment after neutralization	Yes — for post-neutralization bulk absorption
Vermiculite granules	Inorganic mineral; chemically stable to dilute H₂SO₄; may partially dissolve at very high concentrations (>70% H₂SO₄) — not relevant for 30–38% battery electrolyte; acceptable	Yes for battery-strength acid
Cotton/natural fiber	Same dehydrating degradation as cellulose; cotton is a cellulosic material; do not use	No
Peat moss	Cellulosic structure; same degradation mechanism; some emergency guides suggest peat but it is contraindicated for concentrated H₂SO₄	No

spill_kit.* Namespace Fields for Battery Acid H₂SO₄ Routing

Field	Values	Battery Acid Value	Routing Consequence
`spill_kit.acid_type`	h2so4_concentrated / h2so4_dilute / hcl / hf / other	h2so4_concentrated	Triggers exothermic neutralization check; NaHCO₃ contraindication; polypropylene-only sorbent requirement
`spill_kit.exothermic_neutralization_risk`	high_nahco3_contraindicated / moderate_use_staged / low	high_nahco3_contraindicated	'high' = reject any kit with NaHCO₃ as primary neutralizer; require Na₂CO₃, Ca(OH)₂, or staged lime
`spill_kit.lead_contamination`	yes_rcra_d008 / possible / no	yes_rcra_d008	'yes_rcra_d008' = kit must include RCRA D002/D008 hazardous waste containers and labels; disposal requires licensed hazardous waste transporter; cannot landfill without LDR treatment
`spill_kit.sorbent_type`	polypropylene_only / cellulose_ok / clay_vermiculite / universal	polypropylene_only	'polypropylene_only' = reject kits with cellulose pads for ≥30% H₂SO₄; PP is the only fibrous sorbent that survives concentrated acid
`spill_kit.ph_indicator_required`	yes / no	yes	'yes' = kit must include pH indicator for neutralization completion verification before collected waste disposal
`spill_kit.glove_type_required`	neoprene_min / butyl_preferred / nitrile_ok / any	neoprene_min	'neoprene_min' = nitrile 30–60 min breakthrough inadequate for extended battery acid cleanup; neoprene ≥480 min is minimum

AI Failure Modes for Battery Acid Spill Kit Routing

Failure Mode	AI Error	Consequence	Correct Behavior
1. "Baking soda neutralizes acid"	Routes kit with NaHCO₃ neutralizer for battery acid, reasoning "baking soda neutralizes acid — standard chemistry"	NaHCO₃ + concentrated H₂SO₄ creates violent bubbling with steam and acid aerosol; responder is splashed with un-neutralized acid; correct for dilute acid, dangerous for ≥30% H₂SO₄	exothermic_neutralization_risk='high_nahco3_contraindicated' → reject NaHCO₃; route Na₂CO₃ or Ca(OH)₂
2. Generic acid kit for battery room	Routes "universal acid spill kit" with cellulose pads and baking soda for a forklift battery charging room	Both the neutralizer (NaHCO₃) and the sorbent (cellulose) are inappropriate for concentrated H₂SO₄; kit is not merely suboptimal but actively hazardous when opened on a concentrated acid spill	acid_type='h2so4_concentrated' is a separate routing gate from generic acid; battery acid spill requires specialized kit — not generic acid kit
3. Ignoring RCRA D008 lead	Routes standard acid neutralizer kit with no RCRA labeling; user disposes of absorbed spill material in regular trash	Absorbed battery acid waste containing Pb²⁺ >5 mg/L TCLP = RCRA D008 hazardous waste; illegal disposal in regular municipal solid waste; EPA penalties for small quantity generators disposing of hazardous waste in trash; lead contamination of landfill	lead_contamination='yes_rcra_d008' → require RCRA D002/D008 labeled containers in kit; note disposal requires licensed hazardous waste transporter
4. Nitrile gloves for cleanup	Routes kit with nitrile disposable gloves (or recommends standard industrial nitrile for cleanup)	Nitrile rubber breakthrough time for 37% H₂SO₄: 30–60 minutes per ASTM F739; extended battery acid cleanup (containment, absorption, neutralization, collection) routinely exceeds 30 minutes; after breakthrough, sulfuric acid contacts bare skin through dissolved glove material	glove_type_required='neoprene_min'; neoprene breakthrough for H₂SO₄ ≥480 min; butyl even better; never route thin disposable nitrile for concentrated acid cleanup

Related Namespace Pages

Scan your spill kit catalog for acid-specific response fields

CatalogScan checks every spill kit listing for acid_type, exothermic_neutralization_risk, lead_contamination, sorbent_type, and glove_type_required fields — ensuring AI agents do not route generic baking-soda acid kits to battery charging rooms where concentrated H₂SO₄ makes NaHCO₃ neutralization dangerous and lead contamination creates dual RCRA hazardous waste.

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Shopify Spill Kit Schema — Sulfuric Acid H₂SO₄ Battery Acid Lead Contamination Exothermic Neutralization Polypropylene Sorbent, acid_concentration exothermic_neutralization_risk lead_contamination sorbent_type spill_kit.* Namespace