Editing Silicon dioxide (section)

===Other===
[[Hydrophobic silica]] is used as a [[anti-foaming agent|defoamer component]].

In its capacity as a [[refractory]], it is useful in fiber form as a high-temperature [[thermal protection]] fabric.<ref>{{Cite journal |last1=Liu |first1=Guoyi |last2=Liu |first2=Yuanjun |last3=Zhao |first3=Xiaoming |date=2017 |title=The Influence of Spherical Nano-SiO 2 Content on the Thermal Protection Performance of Thermal Insulation Ablation Resistant Coated Fabrics |journal=Journal of Nanomaterials |language=en |volume=2017 |pages=1–11 |doi=10.1155/2017/2176795 |doi-access=free |issn=1687-4110}}</ref>

Silica is used in the [[DNA separation by silica adsorption|extraction of DNA]] and [[RNA]] due to its ability to bind to the nucleic acids under the presence of [[chaotropic agent|chaotropes]].<ref>{{cite book|title=An Introduction to Forensic Genetics|vauthors=Goodwin W, Linacre A, Hadi S|publisher=Wiley & Sons|year=2007|isbn=9780470010259|pages=29}}</ref>

[[Silica aerogel]] was used in the [[Stardust (spacecraft)|Stardust spacecraft]] to collect extraterrestrial particles.<ref>{{Cite news|url=https://www.businessinsider.com/aerogel-science-history-kistler-new-applications-2015-8?IR=T|title=This cloud-like, futuristic material has been sneaking its way into your life since 1931|last=Calderone J|date=20 Aug 2015|work=[[Business Insider]]|access-date=11 Feb 2019}}</ref>

Pure silica (silicon dioxide), when cooled as fused quartz into a glass with no true melting point, can be used as a glass fibre for fibreglass.