Silica gel (orange gel) can be regenerated in a drying oven at 130–140 °C for 3 hours. Desiccant sachets should not be heated beyond 80 °C, as the bag adhesive can melt.
1.01969
Silica gel with indicator (orange gel),
granulate ~ 1 - 3 mm
Synonym(s):
Orange Silica Gel
Sign In to View Organizational & Contract Pricing.
Select a Size
1 KG
$115.00
5 KG
$506.00
25 KG
$1,580.00
About This Item
NACRES:
NB.21
UNSPSC Code:
41123003
Skip To
agency
suitable for EPA OTM-45
form
granular
surface area
700 m2/g
loss
≤2.0% loss on drying, 140°C
particle size
1-3 mm
pore size
2.0-2.5 nm
capacity
250 g/kg water absorbing capacity(20 °C)
mp
>1000 °C
application(s)
PFAS testing
histology
storage temp.
2-30°C
Quality Level
Related Categories
1 of 4
This Item | 1.01972 | 13767 | 10087 |
|---|---|---|---|
| form granular | form granular | form - | form granular |
| particle size 1-3 mm | particle size 1-4 mm | particle size 2-5 mm | particle size 0.2-1 mm |
| pore size 2.0-2.5 nm | pore size 2.0-2.5 nm | pore size - | pore size 60 Å mean pore size |
| surface area 700 m2/g | surface area 700 m2/g | surface area - | surface area 500 m2/g , approx. |
| loss ≤2.0% loss on drying, 140°C | loss ≤2.0% loss on drying, 150°C | loss ≤2% loss on drying, 150 °C, 3 h | loss - |
| Quality Level 200 | Quality Level 200 | Quality Level 100 | Quality Level 100 |
General description
Silica gel with the indicator or orange gel frequently used as a drying agent in laboratories is suitable for drying all gases and solids. It is used in drying towers, desiccators, and absorption tubes. Due to its vast surface area, silica gel orange provides excellent absorption capacity, enabling longer storage conditions. When it absorbs moisture, it also turns orange to colorless. (approx. 6 wt % load).
Application
Silica Gel with Orange gel indicator can be used for:
- Moisture Management: Commonly found in desiccators, it protects hygroscopic chemicals and solids from moisture, ensuring sensitive materials stay intact during storage and experimentation.
- Chromatographic Adsorption: Serves as a stationary phase in chromatography, aiding in the effective separation and analysis of various chemical compounds.
- Equipment Protection: In laboratory settings, it absorbs excess humidity to prevent corrosion and damage to sensitive equipment, extending the lifespan of valuable instruments.
- Drying Agent for Gases and Liquids: Utilized in drying towers and absorption tubes, it efficiently removes moisture from gases and liquids, improving the accuracy of analytical results.
Analysis Note
Water absorption capacity (24 hrs.,80 % relative humidity): ≥ 25.0 %
Loss on drying (140 °C): ≤ 2.0 %
Bulk density: about 70
Loss on drying (140 °C): ≤ 2.0 %
Bulk density: about 70
Storage Class
13 - Non Combustible Solids
wgk
nwg
flash_point_f
Not applicable
flash_point_c
Not applicable
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’.
Already Own This Product?
Find documentation for the products that you have recently purchased in the Document Library.
Related Content
Les FAS, ou "substances chimiques éternelles", persistent dans l'environnement et présentent des risques pour la santé humaine. Découvrez nos outils de surveillance environnementale pour la quantification des PFAS, qui peuvent aider les chercheurs, les organismes de réglementation et les laboratoires à tester les PFAS.
-
can the gel be regenerated in an oven, if so for how long and what temperature
1 answer-
Helpful?
-
-
Can these beads be redried in an oven? or when they are spent (colourless), should they get completely replaced?
1 answer-
These beads (granules) change from orange to colorless when hydrated. The granules can be regenerated by heating in an oven at 130 °C to 140 °C for 3 hours, after which they regain their orange color. This process can be repeated; however, after numerous cycles, the color indicator may fade, reducing the moisture indicating ability.
Helpful?
-
-
What color does the silica gel turn into when saturated?
1 answer-
When saturated with moisture, the silica gel changes from orange to colorless (approximately 6 wt % load).
Helpful?
-
-
How can I determine the shelf life / expiration / retest date of this product?
1 answer-
If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/418/501/product-dating-information-06-25-mk.pdfHelpful?
-
-
How is shipping temperature determined? And how is it related to the product storage temperature?
1 answer-
Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf
Helpful?
-
-
Are these silica gels 101905, 101969, 101972, 107735, and 101907 type A, type B, or type C?
1 answer-
All of the silicas listed appear to be type A, ~700 m2/g BET surface area and 20-25 angstroms (or 2.0-2.5 nm) pore size.
Helpful?
-
Active Filters
Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.
Contact Technical Service