Silica Gel
Silica gel is an amorphous and porous form of silicon dioxide (silica), consisting of an irregular tridimensional framework of alternating silicon and oxygen atoms with nanometer-scale voids and pores. The voids may contain water or some other liquids, or may be filled by gas or vacuum. In the last case, the material is properly called silica xerogel. Silica xerogel with an average pore size of 2.4 nanometers has a strong affinity for water molecules and is widely used as a desiccant. It is hard and translucent, but considerably softer than massive silica glass or quartz; and remains hard when saturated …
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IEEFA: Institute for Energy Economics and Financial Analysis · 19 March 2024 English
This Analysis is supplied personally to the Recipient on the following conditions, which are expressly accepted and agreed to by the Recipient, in part consideration of the supply of the …
include caustic soda, magnesium oxide, methanol, silica gel and bentonite. 27 NT government. Scientific inquiry …
EU: European Union · 16 February 2024 English
and containing a desiccant such as indicator silica gel. Method Transfer 3 to 5 grams of hops to a dish …
AUDA-NEPAD: African Union Development Agency-NEPAD · 7 February 2024 English
In addition, the checklist will facilitate the demonstration of the eligibility of the medicinal product for the EMP TC procedure. [...] The Integrated Overview and Conclusions should clearly define the …
‘HDPE bottle with a child-resistant closure and a silica gel desiccant.Pack-sizes of 30, 60 or 90 film-coated …
WHO: World Health Organization · 2024 English
This report summarizes evidence and information and formulates practical advice on personal-level actions to reduce exposure to ambient air pollution. It covers personal actions such as reducing the amount of …
adsorbent material (e.g. activated charcoal, silica gel) generally do not provide protection against …
WHO: World Health Organization · 2024 English
16 p.
samples for C. diphtheriae and its tox gene. Silica gel packets - Can be used to increase stability … routine semi-solid transport medium or into a silica gel sachet. A1.3 Nasal swabs To take a nasal … routine semi-solid transport medium or into a silica gel sachet. A1.4 Nasopharyngeal swabs To take … routine semi-solid transport medium or into a silica gel sachet. A1.5 Cutaneous lesions To take a … routine semi-solid transport medium or into a silica gel sachet. Laboratory testing for diphtheria in …
WHO: World Health Organization · 2024 English
[362] p.
physicochemical methods for Methods of Analysis. Use silica gel for chromatography R as the coating substance … column (10 cm x 4.6 mm) packed with particles of silica gel, the surface of which has been modified with … physicochemical methods for Methods of Analysis. Use silica gel for chromatography R as the coating substance …
EWG: Environmental Working Group · 21 December 2023 English
The International Fragrance Association restricts this ingredient 2-ACETONAPHTHONE Methyl βnaphthyl ketone 93083 to a maximum concentration of 0.2% in leaveon products restriction limits in the finished product (using the IFRA …
(< 10 ppm), mercury (< 1 ppm), and cadmium (< SILICA GEL Silica, amorphous; silicate; borosilicate 7631869 … (< 10 ppm), mercury (< 1 ppm), and cadmium (< SILICA GEL LIQUID Silica, amorphous; silicate; borosilicate …
WIPO: World Intellectual Property Organization · 8 December 2023 English
Green Technology Book. Solutions for climate change mitigation. World Intellectual Property Organization (WIPO)
refrigerant and heat is stored in the form of dry silica gel (a desiccant material). The device can be integrated …
PIK: Potsdam-Institut fur Klimafolgenforschung · 5 December 2023 English
Venus today is inhospitable at the surface, its average temperature of 750 K being incompatible to the existence of life as we know it. However, the potential for past surface …
and condensation of organic molecules. Porous silica gel was suggested by Westall et al. (2018) and Dass … with the exception of the inclusion of porous silica gel, as noted above, a ubiquitous by-product of the … perhaps assisted by the presence of ubiquitous silica gel, would have facilitated increasing molecular …
World Bank Group · 30 November 2023 English
Q / Procurement of laborator y Falcon tubes , Silica Gel, Po ly-bag, 3 Labeler, Mortar and pestle IDA …