Jointing Compound and Filler for wall chases: Fire Status?

[Robbot]

More specifically, Screwfix's No Nonsense 405 Jointing Compound (442RL) used to fill in electrical wall chase's. The product has the following Precautionary Statements: (P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.P241 Use explosion-proof [electrical/ventilating/lighting/…] equipment.)

Would this be in its raw state, or after mixed and set?

The product is very similar to Easi Fill, however, that does not have the same Precautionary Statements.

I'd be interested in your views on the above.

 

[JohnW2]

The product has the following Precautionary Statements: (P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.P241 Use explosion-proof [electrical/ventilating/lighting/…] equipment.) .... Would this be in its raw state, or after mixed and set?

I would imagine the former, and that there are no heat/fire issues once it is set. You say that it is very similar to EasiFill, but I would not have thought that contained anything flammable.

 

[ericmark]

I read the COSHH regulations with interest

But it also states

and it is a very poor document,

does not seem to be inflammable,

Dolomite can refer to a mineral composed of calcium magnesium carbonate (CaMg(CO3)2cap C a cap M g of open paren cap C cap O sub 3 close paren sub 2) or a sedimentary rock rich in this mineral, also known as dolostone. The term also refers to the Dolomites mountains in Italy. Industrially, it is used in agriculture to improve soil, as a filler in paints and plastics, and in manufacturing refractory bricks and glass.

Calcium sulfate (CaSO4cap C a cap S cap O sub 4) is an inorganic salt with a variety of uses, most commonly in construction (as gypsum board, plaster, and cement), agriculture (as a soil conditioner), and food (as a firming agent for tofu and cheese, and a leavening aid in baked goods). It also has applications in medicine, industry, and as a desiccant.

Neither seem to shout out, don't get hot.

Yet it says, "In the course of fire, formation of temperatures > 600ºC carbon dioxide and at . 1200ª C sulfur oxides may be emitted." so it would seem this is the reason for

and

but I can't really see why no sparks, but I failed 'O' level chemistry.

 

[JohnW2]

I read the COSHH regulations with interest .... But it also states ....and it is a very poor document, View attachment 397484 does not seem to be inflammable,
Neither seem to shout out, don't get hot. .... Yet it says, "In the course of fire, formation of temperatures > 600ºC carbon dioxide and at . 1200ª C sulfur oxides may be emitted." so it would seem this is the reason for <the product's 'Precautionary Statement'> and .... but I can't really see why no sparks, but I failed 'O' level chemistry.

Nor do I, and, for what it's worth, I passed 'A-Level' (and 'S-Level') Chemistry

As one would expect, this product is basically just a type of plaster and what (little) the COSHH sheet says is consistent with that. The Precautionary Statement in Screwfix's 'listing' is what one would expect of a product containing volatile solvents. I suspect that either the manufacturer or Screwfix have erroneously put the wrong 'Precautionary Statement' into that listing!

 

[Robbot]

It does appear to be a head scratcher. Sometimes you read something and it leads to overthinking !

 

[JohnW2]

It does appear to be a head scratcher. Sometimes you read something and it leads to overthinking !

As I said, I think it's just a 'documentation error' on someone's part, since this product is just a type of 'plaster'!

 

[Ragnar_AT]

Some fillers contain cellulose, so I assume the powder might be combustible. This one doesn’t seem to do though.

 

[JohnW2]

Some fillers contain cellulose, so I assume the powder might be combustible. This one doesn’t seem to do though.

As you say, this one doesn't seem to. In any event, those 'Precautions' are one that would be appropriate for a product containing a volatile solvent. If merely being 'combustible' were enough, we'd be seeing that warning for a vast number of products!

 

[Ragnar_AT]

Fine dust (especially flour) can cause nasty explosions though if there‘s enough of it in the air, yet household packs of flour never have amy warnings. Presumably because you need a lot more than one pack to cause any serious danger.

 

[Robbot]

Fine dust (especially flour) can cause nasty explosions though if there‘s enough of it in the air, yet household packs of flour never have amy warnings. Presumably because you need a lot more than one pack to cause any serious danger.

Ironic that on 'Trigger Point' flour was used as an explosive to suck oxygen from a garage. A bit like my wife's cookies