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L

luna202

New Member
Jul 27, 2026
3
Scenario: 32 oz Vet Basics Lime Sulfur Dip concentrate and 1 quart Stellar Chemical Corp Hydrochloric Acid 37% ACS Reagent Grade, mixed undiluted in a plastic bucket in a hotel bathroom with no ventilation.

Possible hotel bathroom volumes:

  • 5 × 7 × 8 ft = 280 ft³ ≈ 7,900 L
  • 5 × 8 × 8 ft = 320 ft³ ≈ 9,100 L
  • 6 × 8 × 8 ft = 384 ft³ ≈ 10,900 L
  • 10 × 6 × 8 ft = 480 ft³ ≈ 13,600 L
  • 9 × 7 × 8 ft = 504 ft³ ≈ 14,300 L
  • 8 × 8 × 8 ft = 512 ft³ ≈ 14,500 L
So the bathroom could realistically be between roughly 8,000 L and 14,500 L, depending on exact layout.

I'm planning to do this but just trying to double check if I have the right ingredients and amount first. so here are my follow up questions.

Questions:

  • Would this actually be lethal at these bathroom sizes?
  • How much H₂S and SO₂ could be produced?
  • Which acid produces more H₂S and less SO₂?
  • How long would the bucket take to reach 1,000 ppm?
  • How long would the room take to reach 1,000 ppm?
  • Would SO₂ or H₂S hit a person first?
  • Would H₂S dissipate on its own if the bathroom is unventilated?
  • Does the order of adding acid to lime sulfur vs lime sulfur to acid matter?
  • Does bucket size matter? What if the bucket overflows?
  • How does this compare to the car case where 120 mL of each produced lethal levels?
  • If the HCl was stored under a bathroom sink, would it weaken/diffuse to 20%? Would that change the danger?
  • How much of each is needed to reach 1,000 ppm in an 8,500 L bathroom? In a 10,000 L bathroom? In a 14,000 L bathroom?
  • How long would a 1.5-gallon bucket take to reach lethal levels?
  • What ppm would someone inhale directly from the bucket right after mixing? If they waited 2 minutes?
  • Would one normal breath cause unconsciousness? Would they feel anything?
  • If no one rescues them, how long until death? Would they wake up on their own? How would it feel if they woke up?
  • If rescued, how long would it take to regain consciousness? What are the long term consequences?
  • If someone was exposed to lower ppm first, then took a breath from the bucket, what would happen?
  • If no gas builds up in the room after passing out, how long until they wake up?
  • Will increasing the chemical amounts increase the reaction rate?
  • How much ppm would be in the bucket if a lot of liquid overflows?

I just want to make sure I am doing this correctly.
 
P

PrisonPlanet

Member
Jun 14, 2023
31
All I can say is that I had a chemistry lab where we had to use sulfuric acid under a fume hood and I don't remember why but I took the sulfuric acid out of the funny hood and I started coughing uncontrollably. Hydrochloric acid is way more mild than sulfuric acid. Like I've used hydrochloric acid outside of a fume Hood.