Help What is the minimum concentration of sulfuric acid required for the formic acid method?

[No surprises]

What is the minimum concentration of sulfuric acid required for the formic acid method?I only have 91% sulfuric acid, is that enough?
AI is very unreliable and often contradicts itself. Please do not use AI to answer, thank you.

 

[No surprises]

Did I say something I shouldn't have? Why haven't I received a single reply, or even a like?

 

[pascagalias]

Many people don't want to give detailed advice regarding suicide - mainly for ethical reasons.
Every method has severe risks. So no one wants to feel guilty by helping you to make your life worse than before.

But there are discussions on this forum about this method already. Searching them will allow you to make an informed decision.
I hope you find peace, or ways to recover.

 

[Intoxicated]

From what I remember, the most intense dehydration by H₂SO₄ happens till it forms the monohydrate - H₂SO₄ * H₂O

HCOOH + H₂SO₄ ⟶ H₂SO₄ * H₂O + CO

H₂SO₄ * H₂O contains 84.48% H₂SO₄ by mass, so 91% H₂SO₄ corresponds to 1 part of 100% H₂SO₄ + 1.38 parts of H₂SO₄ * H₂O .

91% H₂SO₄ should work, but somewhat slower than 96 - 98% H₂SO₄. If you can get phosphorus pentoxide, you can use it to absorb some amount of water from your sulfuric acid in order to speed up the reaction (P₄O₁₀ is a stronger dehydrating agent, which can even turn H₂SO₄ into SO₃).

Keep in mind that water initially present in a solution of formic acid will also contribute to dilution of H₂SO₄ after mixing the two reagents. I'd rather use sodium formate instead of formic acid. HCOONa is safer to handle than the highly volatile liquid acid, and the salt is easier to obtain in anhydrous form.

2 HCOONa + H₂SO₄ ⟶ Na₂SO₄ + 2 HCOOH
HCOOH + H₂SO₄ ⟶ H₂SO₄ * H₂O + CO↑

Video of CO preparation:
View attachment 184630

 

[No surprises]

From what I remember, the most intense dehydration by H₂SO₄ happens till it forms the monohydrate - H₂SO₄ * H₂O

HCOOH + H₂SO₄ ⟶ H₂SO₄ * H₂O + CO

H₂SO₄ * H₂O contains 84.48% H₂SO₄ by mass, so 91% H₂SO₄ corresponds to 1 part of 100% H₂SO₄ + 1.38 parts of H₂SO₄ * H₂O .

91% H₂SO₄ should work, but somewhat slower than 96 - 98% H₂SO₄. If you can get phosphorus pentoxide, you can use it to absorb some amount of water from your sulfuric acid in order to speed up the reaction (P₄O₁₀ is a stronger dehydrating agent, which can even turn H₂SO₄ into SO₃).

Keep in mind that water initially present in a solution of formic acid will also contribute to dilution of H₂SO₄ after mixing the two reagents. I'd rather use sodium formate instead of formic acid. HCOONa is safer to handle than the highly volatile liquid acid, and the salt is easier to obtain in anhydrous form.

2 HCOONa + H₂SO₄ ⟶ Na₂SO₄ + 2 HCOOH
HCOOH + H₂SO₄ ⟶ H₂SO₄ * H₂O + CO↑

Video of CO preparation:
View attachment 184630

Thank you! Your chemistry level is practically academician-level in the suicide community.