en

silica

1

Terminological databases

EKI terminibaas Esterm

ID 707213 Last modified 30.12.2004
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Domain Chemistry
ränidioksiid preferred
silicon dioxide preferred
silica
silicium dioxide
  • räni ja hapniku ühend, maakoores leiduv värvitu kristalne aine
  • compound of the two most abundant elements in the Earth's crust, silicon and oxygen. It has three main crystalline varieties: quartz (by far the most abundant), tridymite, and cristobalite. Other varieties include coesite, keatite, and lechatelierite.
ränidioksiid preferred
kvarts
silicon dioxide preferred
Usage examples
  • As an additive in the manufacture of tomato juice and tomato concentrate citric acid (E 330) may be used. Furthermore, in the manufacture of: - tomato juice with a dry weight content of less than 7 %, ascorbic acid (E 300) may be used. However, the ascorbic acid content shall not exceed 0,03 % by weight of the finished product, - tomato concentrate in powder form, silicon dioxide (551) may be used. However, the silicon dioxide content shall not exceed 1 % by weight of the finished product.
silica
silicium dioxide
E 551 symbol

Materjalitehnika terminibaas

ID 671326 Last modified 12.01.2025
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Domain Chemistrymaterials science
silicon dioxide preferred
кремнeзём preferred
  • enamike maakide aheraine ja valutööstuses kasutatava kvartsliiva peamine koostisosa – ränidioksiid SiO2; esineb viis polümorfset erimit: kvarts (enimlevinud), tridümiit, kristobaliit, koesiit ja stišoviit (vt kvarts; kvartsliiv)
  • the dioxide of silicon (SiO2), the most common mineral in the majority of sands; occurs in five crystalline polymorphs: quartz, tridymite, cristobalite, coesite, and stishovite (see: quartz; quartz sand)
ränidioksiid
silicon dioxide preferred
silica
кремнeзём preferred

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