Jacoji, every article that I have read is that it is a different chemical composition. That is the reason it is not sold as weaved silica. Silica definition is a very broad one and a big factor is the % of glass fibre that is contained. China, the big producer, ranges regularly from 4-8%+ of glass. This is why it is becoming known as the new cancer stick. There are also too many variations of other ingredients to keep up with. Point is, many silica brands have no standard composition.
Ekowool, yes contains silica but, one of different material components than random glass and sodium. Torch silica and it may flare up yellow, this is called a sodium flare and is burning the sodium that is in the glass in the silica. Torch authentic ekowool and it will not as the silica composition is completely different.
In fact the site you quoted, uses SiO2≥98, and a glass - sand that is applicable for nano-silica can be widely used in ceramics (sugar) porcelain, gypsum, batteries, paints, adhesives, cosmetics, glass, steel, fiber, glass, and many other fields of environmental protection products for upgrading. This is real Ekowool, it is not simply braded silica as many use the term too loosly. The reason for the silicon is obviously for heat resistance but it is the composition that differs.
I suppose I should have said that they are the same but different or they are different but the same....
anyway back the strippers.