AI advises using paper towels or water to clean up a concentrated sulfuric acid spill in a laboratory, ignoring neutralization and PPE requirements
ID: safety/chemical-spill-lab-protocol
Version Compatibility
| Version | Status | Introduced | Deprecated | Notes |
|---|---|---|---|---|
| OSHA 29 CFR 1910.1450 (Laboratory Standard) | active | — | — | — |
| ACS Safety Guidelines for Chemical Spills | active | — | — | — |
| NFPA 45 (Standard on Fire Protection for Laboratories Using Chemicals) | active | — | — | — |
Root Cause
Concentrated sulfuric acid (H2SO4) is a strong dehydrating agent and causes exothermic reactions with water (can boil and splash). Paper towels absorb acid, spreading it and generating heat, potentially igniting organic materials. Proper protocol: neutralize with sodium bicarbonate (baking soda) or calcium carbonate, then absorb with inert material (vermiculite, sand). PPE (acid-resistant gloves, goggles, lab coat) is mandatory. AI may confuse with weak acid spills (e.g., acetic acid) or general cleaning advice.
generic中文
浓硫酸（H2SO4）是一种强脱水剂，与水发生放热反应（可能沸腾和飞溅）。纸巾吸收酸液，扩散并产生热量，可能引燃有机材料。正确规程：用碳酸氢钠（小苏打）或碳酸钙中和，然后用惰性材料（蛭石、沙子）吸收。必须穿戴PPE（耐酸手套、护目镜、实验服）。AI可能混淆弱酸泄漏（如乙酸）或一般清洁建议。
Official Documentation
https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1450Workarounds
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95% success Evacuate the area, ventilate, and don acid-resistant PPE (nitrile gloves, chemical splash goggles, lab coat). For small spills (<1 L), carefully cover with sodium bicarbonate (baking soda) until fizzing stops. Use a plastic scoop to transfer neutralized residue to a chemical waste container. For large spills, use a spill pillow or vermiculite to contain, then neutralize.
Evacuate the area, ventilate, and don acid-resistant PPE (nitrile gloves, chemical splash goggles, lab coat). For small spills (<1 L), carefully cover with sodium bicarbonate (baking soda) until fizzing stops. Use a plastic scoop to transfer neutralized residue to a chemical waste container. For large spills, use a spill pillow or vermiculite to contain, then neutralize.
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85% success If sodium bicarbonate is unavailable, use calcium carbonate (limestone powder) or soda ash (sodium carbonate). For extremely concentrated acid (>95%), consider using sand or diatomaceous earth first to absorb, then neutralize the absorbed material. Never add water directly to the spill.
If sodium bicarbonate is unavailable, use calcium carbonate (limestone powder) or soda ash (sodium carbonate). For extremely concentrated acid (>95%), consider using sand or diatomaceous earth first to absorb, then neutralize the absorbed material. Never add water directly to the spill.
中文步骤
Evacuate the area, ventilate, and don acid-resistant PPE (nitrile gloves, chemical splash goggles, lab coat). For small spills (<1 L), carefully cover with sodium bicarbonate (baking soda) until fizzing stops. Use a plastic scoop to transfer neutralized residue to a chemical waste container. For large spills, use a spill pillow or vermiculite to contain, then neutralize.
If sodium bicarbonate is unavailable, use calcium carbonate (limestone powder) or soda ash (sodium carbonate). For extremely concentrated acid (>95%), consider using sand or diatomaceous earth first to absorb, then neutralize the absorbed material. Never add water directly to the spill.
Dead Ends
Common approaches that don't work:
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90% fail
Water reacts with concentrated H2SO4 exothermically (temperature can exceed 100°C), causing splashing and potential burns. The heat can also damage lab surfaces or ignite nearby combustibles.
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70% fail
Universal absorbents may not neutralize acid; they only soak it up, leaving corrosive residue. Some pads are hydrophobic and won't absorb concentrated acid effectively.
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85% fail
Concentrated H2SO4 degrades latex rapidly (within seconds). Use nitrile or neoprene gloves; safety glasses do not protect against splashes (goggles required).