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223921

Sigma-Aldrich

Ascarite®

Sodium hydroxide-coated silica, 20-30 mesh

Synonym(s):

Ascarite CO2 adsorbent

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About This Item

CAS Number:
MDL number:
UNSPSC Code:
12352302
NACRES:
NA.22

Quality Level

form

granular

particle size

20-30 mesh

InChI

1S/Na.H2O/h;1H2/q+1;/p-1

InChI key

HEMHJVSKTPXQMS-UHFFFAOYSA-M

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General description

Ascarite® is sodium hydroxide coated silica mainly used as carbon dioxide adsorbents. It is the second generation of the original Ascarite, which was derived from granular asbestos. Ascarite rapidly and quantitatively adsorbs carbon dioxide, (and acid gases), and is useful in a number of analytical and microanalytical procedures, physiological studies, etc.

Application

Ascarite® can be used as a carbon dioxide (CO2) trap.

Features and Benefits

The material is self-indicating, gradually changing color (to white) within a narrow zone due to the formation of sodium carbonate.

Legal Information

Ascarite is a registered trademark of Arthur H. Thomas Co.

Pictograms

Corrosion

Signal Word

Danger

Hazard Statements

Hazard Classifications

Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1A

Storage Class Code

8B - Non-combustible corrosive hazardous materials

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Highly selective iron-based Fischer?Tropsch catalysts activated by CO2-containing syngas
Chun D H, et al.
J. Catal., 317, 135-143 (2014)
Reduction of [11C] CO2 to [11C] CO using solid supported zinc.
Dahl K, et al.
Journal of Labelled Compounds & Radiopharmaceuticals, 60(13), 624-628 (2017)
Lingzhi Zhang et al.
Carbohydrate polymers, 94(1), 386-393 (2013-04-03)
β-Cyclodextrin (β-CD)/cellulose hydrogels were prepared in NaOH/urea aqueous solution by crosslinking with epichlorohydrin. The structure and morphology of the hydrogels were characterized with Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM). The swelling test, 5-fluorouracil (5-FU)
Yao-Yue Yang et al.
Langmuir : the ACS journal of surfaces and colloids, 29(5), 1709-1716 (2013-01-15)
The dissociative adsorption and electrooxidation of CH(3)OH at a Pd electrode in alkaline solution are investigated by using in situ infrared spectroscopy with both internal and external reflection modes. The former (ATR-SEIRAS) has a higher sensitivity of detecting surface species
Ying Pei et al.
Carbohydrate polymers, 92(2), 1752-1760 (2013-02-13)
In this work, a series of cellulose/collagen hydrolysate (RC/CH) films were prepared in NaOH/urea aqueous solution via a simple, low-cost and green pathway. To overcome the disadvantages (brittleness, poor water resistance) of CH as biomaterials, CH was combined with regenerated

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