![]() Would you want to move into a newly rented place with oil dot marks all over the wall? Probably not. The oil can leave a mark which can be an absolute nightmare to remove, especially from wallpaper. Now imagine how much mineral oil has been squished and seeped into dry wallpaper for the last 9 months. Remember getting chain oil on your legs or jeans when you were a kid? Have you ever splattered olive oil on your top? It’s tough to get out, even if it’s only been there for a few minutes. It’s this mineral oil that helps your Blu Tack stick to the wall and your poster, rather than sliding down the wall like Silly Putty, that causes problems.īlu Tack is 10% oil?! Mineral Oil can seep out of the Blu Tack into more absorbent surfaces like wallpaper and bone-dry painted walls. But you don’t want it to be too sticky! The stickiness needs to be limited, so they add a mineral oil to reduce the stickiness of the hydrocarbon polymers. It’s also used in glues, resin in paint, and the glue in fiberglass. Calcium carbonate is the Mineral Filler (80%) White Mineral Oil is the Mineral Oil (10%) Polyisobutene is the Synthetic Rubber (10%) Calcium carbonate is inert, boring, hydrocarbon polymers which make up the adhesive component of Blu Tack - this is the bit that makes it sticky. ![]() Looking back at the Safety Data Sheet we can match up the ingredients with the recipe from ‘Chemistry at Home: Exploring the Ingredients in Everyday Products’. On its own Blu Tack would be white and it was thought that this might encourage children to eat it so it had to be given a colour that would not attract them but would act as a warning. Synthetic Rubber (10%) is a styrene-butadiene rubber that gives Blu Tack its mouldability Pigment (<1%). Mineral Oil (10%) is a colourless mixture of long chain hydrocarbons extracted from oil and consists of saturated and aromatic components with the saturated part accounting for almost all of it. ![]() Pigment (<1%) Mineral Filler (80%) is probably calcium carbonate or china clay. In the book John states (we’ve paraphrased): Contents: These ingredients check out, as they’re listed in John Emsley’s ‘ Chemistry at Home: Exploring the Ingredients in Everyday Products’. What is Blu Tack made from? The Safety Data Sheet lists three substances which may be used in the production of Blu Tack: Calcium carbonate, White Mineral Oil, Polyisobutene. Click through to the Safety Data Sheet for Bostik Blu Tack dated 9 November 2016. What is Blu Tack? Bostik, like most chemical companies, don’t want to give away their trade secrets, so we have to do a bit of digging around to find out what’s being cooked up. Remember: you can rate your landlord on Marks Out Of Tenancy. According to a book named ‘ Adventures in Stationery: A Journey Through Your Pencil Case’ by James Ward, the Bostik factory in Leicester was making 100 tonnes of Blu Tack PER WEEK! Blu-Tac is actually ‘Blu Tack’ - it’s made by a company called Bostik that manufactures adhesives and sealants for domestic, commercial and industrial purposes. What’s the reason why landlords don’t allow their tenants to use Blu-Tac? What is Blu-Tac? What is Blu-Tac made from? Is it Blu-Tac, Blue-Tac, Blu-Tack, Blu Tack or Blue Tack? If your landlord won’t let you use Blu-Tac to put pictures, maps, posters or whatever on the wall, what can you do?
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