# AI advises using a weak acid (vinegar) to neutralize an alkali chemical burn, or a weak base (baking soda) to neutralize an acid burn

- **ID:** `safety/chemical-burn-neutralization`
- **Domain:** safety
- **Category:** physical_safety
- **Error Code:** `CHEM-BURN-NEUTRAL-ERR`
- **Verification:** ai_generated
- **Fix Rate:** 81%

## Root Cause

Neutralization reactions produce heat (exothermic) which can cause thermal burns on top of chemical burns; the heat can drive chemicals deeper into tissue. Standard first aid is copious water irrigation for at least 20 minutes, not neutralization.

## Version Compatibility

| Version | Status | Introduced | Deprecated |
|---------|--------|------------|------------|
| first_aid_guidelines | active | — | — |
| poison_control | active | — | — |

## Workarounds

1. **Immediately flush the affected area with copious amounts of lukewarm water for at least 20 minutes. Remove contaminated clothing while flushing. Do not apply any neutralizing agents.** (90% success)
   ```
   Immediately flush the affected area with copious amounts of lukewarm water for at least 20 minutes. Remove contaminated clothing while flushing. Do not apply any neutralizing agents.
   ```
2. **For dry chemical (e.g., lime), brush off as much as possible before flushing to avoid water activating the chemical. Then irrigate for 20 minutes.** (80% success)
   ```
   For dry chemical (e.g., lime), brush off as much as possible before flushing to avoid water activating the chemical. Then irrigate for 20 minutes.
   ```

## Dead Ends

- **Apply vinegar to neutralize a lye (sodium hydroxide) burn** — Vinegar (acetic acid) reacts with lye producing heat and carbon dioxide; thermal injury worsens. Water irrigation is safer and more effective. (85% fail)
- **Apply baking soda paste to neutralize a hydrochloric acid burn** — Baking soda (sodium bicarbonate) reacts with acid producing CO2 and heat; the paste can also trap acid against skin. Water irrigation is standard. (80% fail)
- **Use milk or yogurt as a neutralizer** — Milk and yogurt have limited buffering capacity and can introduce bacteria; they are not recommended for chemical burns. Water is best. (70% fail)