Solder fumes behaviour considering, for making a glove box

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Re: Solder fumes behaviour considering, for making a blove box

Hi,

I really don't know how dangerous this is..
But isopropyl alcohol in a closed glove box may result in explosive gas (concentration) inside the box.
The flash point is at about 12°C.
Combined with heat of the soldering iron...

Maybe consult a person who has experience with this topic.

Klaus
 

Re: Solder fumes behaviour considering, for making a blove box

I should add that the 12C flash point is for pure isopropyl alcohol, the commonly available types are mixed with water and have higher flash points. The 'auto ignition' temperature where it spontaneously combusts is MUCH higher! Otherwise many common domestic cleaning products would ignite at room temperature!


Brian.
 

Re: Solder fumes behaviour considering, for making a blove box

Hi,

Yes, I know that the flash point is not the temperature where it immediately starts to burn. But if there is high enough temperature around (soldering iron, spark..) it may start to burn.

But how sure are you that a mixture with water decreases the flash point? And how much?
I assume many alcohol for cleaning purposes are at least 70%.

Klaus
 

Re: Solder fumes behaviour considering, for making a blove box

KlausST said:
But isopropyl alcohol in a closed glove box may result in explosive gas (concentration) inside the box.
Click to expand...

You are correct. The glove box need to be ventilated periodically if any significant amount of isopropyl alcohol is being used inside the glove box.

Isopropyl alcohol is not particularly toxic; it can be safely used outside the glove box.

If you are having a spark source inside the glove box (e.g., power outlet in which the soldering iron is plugged into (and is rather loose fitting), this can be rather risky. One single spark can result in a great show.
 

Re: Solder fumes behaviour considering, for making a blove box


Very helpful!
Thanks, I will avoid this mistake.
Do you think the same risk could happen because of other chemicals in the solder fumes?
 

Re: Solder fumes behaviour considering, for making a blove box

Hi,

Do you think the same risk could happen because of other chemicals in the solder fumes?
Click to expand...

I don`think there are flammable contents. At least not in sufficient concentration.

Datasheets and MSDS will give you more reliable informations.
Yes, MSDS: Each of the products you use should provide an MSDS. There you may find safety considerations. (Don´t be shocked by reading all this)

Klaus
 

Re: Solder fumes behaviour considering, for making a blove box

neazoi said:
Do you think the same risk could happen because of other chemicals in the solder fumes?
Click to expand...

The major component in the core of the solder is rosin: a gum obtained from plants. This is activated by acid treatments.

Shamelessly copied from wikipedia:

 

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