PPI-102S (CAS 163702-01-0, 7473-98-5)
| CAS No. | 163702-01-0, 7473-98-5 |
|---|---|
| Alias | Mixed macromolecular photoinitiator |
| Category | Photoinitiators |
| Purity | Confidential - available on request |
| Packaging | 25kg/pail; 200kg/drum |
PPI-102S is a mixed macromolecular free radical photoinitiator with low odor, designed for applications requiring minimal odor and high solubility in resins. It is particularly suitable for thin coatings where oxygen inhibition is a concern and for materials in direct contact with the human body. Main uses include UV-curable wood coatings and other basic UV curing systems.
Equivalent grades. The same substance is sold by other manufacturers as Esacure ONE, KIP 150. It is the same CAS number (163702-01-0, 7473-98-5) and the same chemistry, so a formulation written around one of those grades transfers directly.
Introduction
PPI-102S is a blended macromolecular grade of the same family as PPI-101 and PPI-ONE, equivalent in chemistry to the grade sold elsewhere as Esacure ONE or KIP 150. It is intended for formulators who want the oligomeric behaviour with a different handling or compatibility profile.
Physical & Chemical Properties
Chemical name 2-hydroxy-1-[3-[4-(2-hydroxy-2-methylpropanoyl)phenyl]-1,1,3-trimethyl-2,3-dihydro-1H-inden-5-yl]-2-methylpropan-1-one. Molecular formula C26H32O5, molecular weight 424.53, purity ≥95.00% by HPLC.
Grade-specific physical data is on the COA; ask us for the current technical data sheet for this variant.
Applications
Thin coatings where oxygen inhibition limits surface cure, clear finishes, and applications where a low-volatility, low-odour initiator is wanted. The blend variants exist to adjust compatibility with specific resin systems.
Why the structure matters
The active group here sits on a bulky indane core rather than on a small molecule. That is a deliberate design choice, and it is the reason this chemistry is specified where migration is a concern: a large molecule diffuses through a cured film far more slowly than a small one does, so less of it reaches the surface over time. The same bulk reduces volatility, which means less evaporation in the oven and less odour in the finished article.
That is the structural argument, and it is a sound one. It is not a measurement. Actual migration depends on film weight, substrate, cure conditions and the layers above, and it has to be measured for your specific construction rather than inferred from a data sheet. Tell us the construction and we will tell you what data we hold and what you will need to generate.
Regulatory status
PPI-102S has no harmonised classification under CLP and is not on the REACH Candidate List. It is not listed in Swiss Annex 10. The CAS is shared with Esacure ONE, so a specification written around that grade transfers, but confirm the blend ratio with us before substituting.
Packaging
Packaging as agreed at order. COA per batch, SDS in English.
Applications & Industries
Coatings & Paints
Metal driers (cobalt, manganese, zirconium octoate, naphthenates) and photoinitiators for coatings, paints, varnishes and industrial finishes — with COA & MSDS per batch.
UV Curing & Printing Inks
Free radical photoinitiators for UV-curable inks, coatings, adhesives and 3D printing — 1173, 184, 369, 907, ITX, DETX, TPO/TPO-L and liquid blends, QC-tested per batch.
Related Products
Frequently Asked Questions
What is your minimum order quantity (MOQ)?
MOQ depends on the product and specification. For most chemicals we can supply from 1 kg sample orders up to full container loads (FCL). Contact us with the product name and CAS number for a specific MOQ quotation.
Can you provide samples before I place a bulk order?
Yes. Samples are available for most products — typically 100g to 1kg. Sample fees may apply for expensive products and are usually deducted from your first bulk order. We recommend independent testing of samples before committing to bulk.
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Every shipment includes a batch-specific Certificate of Analysis (COA), MSDS/SDS, commercial invoice, packing list and bill of lading. Certificates of origin, REACH/SVHC declarations and third-party inspection reports are available on request.
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