Unfortunately, the solubility or stability of this product has not been tested directly. This compound is described as a water-soluble photoinitiator and is expected to be soluble at 4.7 wt% in water. Fresh solution preparation at the time of use is recommended. The method of dissolution will depend on the intended application. It is possible to dissolve this product at a concentration of 0.05% w/v in deionized water for forming a gelatin methacrylate hydrogel.
900889
Lithium phenyl-2,4,6-trimethylbenzoylphosphinate
≥95%
Lithium phenyl-2,4,6-trimethylbenzoylphosphinate
Synonym(s):
LAP
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About This Item
Empirical Formula (Hill Notation):
C16H16LiO3P
CAS Number:
Molecular Weight:
294.21
MDL number:
UNSPSC Code:
12352128
NACRES:
NA.23
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Product Name
Lithium phenyl-2,4,6-trimethylbenzoylphosphinate, ≥95%
SMILES string
CC1=C(C(P(C2=CC=CC=C2)(O[Li])=O)=O)C(C)=CC(C)=C1
assay
≥95%
form
crystalline powder
color
white to off-white
storage temp.
2-8°C
Quality Level
Looking for similar products? Visit Product Comparison Guide
1 of 4
This Item | 199877 | 323403 | L0375 |
|---|---|---|---|
| assay ≥95% | assay 95% | assay 95% | assay - |
| storage temp. 2-8°C | storage temp. - | storage temp. - | storage temp. 2-8°C |
| form crystalline powder | form powder | form pellets | form powder |
| color white to off-white | color - | color - | color - |
| Quality Level 100 | Quality Level 200 | Quality Level 200 | Quality Level 200 |
Application
Lithium phenyl-2,4,6-trimethylbenzoylphosphinate (LAP) is a water soluble, cytocompatible, Type I photoinitiator for use in the polymerization of hydrogels or other polymeric materials. This photoinitator is preferred over Irgacure 2959 for biological applications due to its increased water solubility, increased polymerization rates with 365 nm light, and absorbance at 400 nm allowing for polymerization with visible light. The improved polymerization kinetics enable cell encapsualation at reduced initiator concentration and longer wavelength light, which has been shown to reduce initiator toxicity and increase cell viability.
Features and Benefits
- Superior water solubility
- Biocompatible
- Sensitiveto visible light
Storage Class
11 - Combustible Solids
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
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I would like to know how I could prepare and store a stock solution for LAP.
1 answer-
Helpful?
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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?
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May I know the exact content for this product? (Purity(HPLC) is about the area ratio, right?)
1 answer-
The purity value of this product is approximately 99%, depending on the lot number. The percentage purity is calculated by High-Performance Liquid Chromatography (HPLC) using area ratios obtained from the chromatograms.
Helpful?
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What is the quantum yield of this photoinitiator for 365 nm light?
1 answer-
The quantum yield of this product at 365 nm is not tested. Here is a reference paper that reported the quantum yield of 0.35: https://onlinelibrary.wiley.com/doi/10.1002/macp.1991.021921010?msockid=09c4269466ab65c01be132a5675564f9
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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?
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Hello, I would like to know what is the minimum power to activate LAP?
1 answer-
Minimum activation levels are not determined for this product. As per the product information, this compound demonstrates increased polymerization rates with 365 nm light, and absorbance at 400 nm allowing for polymerization with visible light. See the link below for a publication that may be helpful.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7408440/Helpful?
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