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

- **ID:** `safety/chemical-burn-first-aid-wrong-neutralization`
- **Domain:** safety
- **Category:** physical_safety
- **Verification:** ai_generated
- **Fix Rate:** 92%

## Root Cause

Neutralization reactions generate heat exothermically, which can worsen thermal injury; the correct first aid is immediate, copious irrigation with water for at least 20 minutes.

## Version Compatibility

| Version | Status | Introduced | Deprecated |
|---------|--------|------------|------------|
| OSHA 29 CFR 1910.120 | active | — | — |
| NIOSH Emergency Response Guide | active | — | — |

## Workarounds

1. **Immediately flush the affected area with copious amounts of cool running water for at least 20 minutes. Remove contaminated clothing while flushing. Use a safety shower if available.** (95% success)
   ```
   Immediately flush the affected area with copious amounts of cool running water for at least 20 minutes. Remove contaminated clothing while flushing. Use a safety shower if available.
   ```
2. **For dry chemical (e.g., lime, sodium metal), brush off the chemical with a dry, non-abrasive tool before flushing, then irrigate with water for 20 minutes.** (85% success)
   ```
   For dry chemical (e.g., lime, sodium metal), brush off the chemical with a dry, non-abrasive tool before flushing, then irrigate with water for 20 minutes.
   ```
3. **After irrigation, cover the burn loosely with a sterile non-stick dressing or clean cloth. Seek emergency medical evaluation for all chemical burns larger than 3 inches or on face, hands, feet, or genitals.** (90% success)
   ```
   After irrigation, cover the burn loosely with a sterile non-stick dressing or clean cloth. Seek emergency medical evaluation for all chemical burns larger than 3 inches or on face, hands, feet, or genitals.
   ```

## Dead Ends

- **** — Vinegar (acetic acid) reacts with NaOH to produce sodium acetate, water, and significant heat, causing thermal burns on top of chemical injury. (95% fail)
- **** — Baking soda (sodium bicarbonate) reacts with strong acids to produce CO2 gas and heat; the foaming action can spread the acid and the heat worsens tissue damage. (90% fail)
- **** — Wiping can spread the chemical to unaffected skin and push it deeper into tissues; dry cloth may not remove all chemical and causes friction damage. (85% fail)