I was thinking about getting some foam in a can to fill an open hole in
a pipe chase in my study. But when I looked at what Screwfix are
offering, I changed my mind.

Extract from the More Info. section:

"Label Info 1: Signal Word Danger

Label Info 2: Hazard Statements H222 Extremely flammable aerosol.H229 Pressurised container: may burst if heated.H351 Suspected of causing cancer.H362: May cause harm to Breast-fed children.H332 Harmful if inhaled.H373 May cause damage to organs through prolonged or repeated exposure.H319 Causes serious eye irritation.H335 May cause respiratory irritation.H315 Causes skin irritation.H334 May cause allergy or asthma symptoms or breathing difficulties if inhaled.H317 May cause an allergic skin reaction.H413 May cause long lasting harmful effects to aquatic life.

Label Info 3: Precautionary Statements P101 If medical advice is needed, have product container or label at hand.P102 Keep out of reach of children.P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.P211 Do not spray on an open flame or other ignition source.P251 Do not pierce or burn, even after use.P308 + P313 IF exposed or concerned: Get medical advice/ attention.P405 Store locked up.P410 + P412 Protect from sunlight. Do no expose to temperatures exceeding 50 o C/ 122 o F.P501 Dispose of contents/container to €¦

Label Info 4: Supplementary Label Info - Persons already
sensitised to diisocyanates may develop allergic reactions when using
this product. - Persons suffering from asthma, eczema or skin problems
should avoid contact, including dermal contact, with this product. -
This product should not be used under conditions of poor ventilation
unless a protective mask with an appropriate gas filter (i.e. type A1
according to standard EN 14387) is used. Gas/vapour spreads at floor
level: ignition hazard".

Maybe I'll find some other way to block the hole.

--
Davey.