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/449/386/product-dating-information-mk.pdf
P1254
Brij® L23
suitable for Stein-Moore chromatography
Synonym(s):
Brij 35, C12E23, Polyoxyethylene (23) lauryl ether
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description
non-ionic
Quality Level
form
solid
mol wt
micellar avg mol wt 48,000
estimated mol wt 1198
aggregation number
20-40
CMC
91 μM
transition temp
cloud point >100 °C
HLB
16.9
suitability
suitable for Stein-Moore chromatography
SMILES string
CCCCCCCCCCCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCO
InChI
1S/C58H118O24/c1-2-3-4-5-6-7-8-9-10-11-13-60-15-17-62-19-21-64-23-25-66-27-29-68-31-33-70-35-37-72-39-41-74-43-45-76-47-49-78-51-53-80-55-57-82-58-56-81-54-52-79-50-48-77-46-44-75-42-40-73-38-36-71-34-32-69-30-28-67-26-24-65-22-20-63-18-16-61-14-12-59/h59H,2-58H2,1H3
InChI key
IEQAICDLOKRSRL-UHFFFAOYSA-N
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1 of 4
This Item | 16005 | B4184 | 235989 |
|---|---|---|---|
| suitability suitable for Stein-Moore chromatography | suitability - | suitability - | suitability - |
| form solid | form pellets | form liquid | form - |
| aggregation number 20-40 | aggregation number - | aggregation number 40 | aggregation number - |
| Quality Level 200 | Quality Level 200 | Quality Level 200 | Quality Level 200 |
| mol wt micellar avg mol wt 48,000, estimated mol wt 1198 | mol wt - | mol wt ~1198.0 g/mol | mol wt average Mn ~362 |
| description non-ionic | description non-ionic | description non-ionic | description non-ionic |
Application
Legal Information
Storage Class
11 - Combustible Solids
wgk_germany
WGK 2
flash_point_f
>300.2 °F - open cup
flash_point_c
> 149 °C - open cup
ppe
dust mask type N95 (US), Eyeshields, Gloves
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How can I determine the shelf life / expiration / retest date of this product?
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How is shipping temperature determined? And how is it related to the product storage temperature?
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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
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How to prepare a 1% solution of Brij 35?
1 answer-
To prepare a 1% solution of Brij 35, first verify the concentration of the Brij 35 solution. Once the concentration is known, can use water as the diluent to prepare the 1% solution of Brij 35. If the Brij 35 solution is not already at the desired 1% concentration, dilute it accordingly with water.
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