PPI-ONE (CAS 163702-01-0)
| CAS No. | 163702-01-0 |
|---|---|
| Alias | hydroxy-1-(3-[4(2-hydroxy-2-methyl-propionyl)-phenyl]-1,1,3-trimethyl-indan-5-yl}-2-methyl-propan-1-one |
| Category | Photoinitiators |
| Purity | ≥95.00% (HPLC) |
| Packaging | 20kg/drum |
PPI-ONE is a novel macromolecular photoinitiator with high reactivity, low volatility, low migration, low toxicity, and low yellowing. It is designed for applications requiring direct human contact, such as coatings and food packaging inks, and is particularly effective in thin coatings where oxygen inhibition is a concern.
Equivalent grades. The same substance is sold by other manufacturers as Esacure ONE, KIP 150. It is the same CAS number (163702-01-0) and the same chemistry, so a formulation written around one of those grades transfers directly.
Introduction
PPI-ONE is an oligomeric alpha-hydroxy ketone, equivalent to the grade sold elsewhere as Esacure ONE or KIP 150, supplied as an off-white powder. It is the same chemistry as PPI-101 in a form that doses without preheating.
For most formulators the choice between the two comes down to plant layout rather than performance. If you have heated dosing capability, the liquid version avoids dust. If you would rather weigh a powder into the mill base the way you always have, this is the one to specify.
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.
Off-white powder. Absorption maximum at 258 nm. Recommended dosage 3–5%.
Applications
Thin coatings where oxygen inhibition limits cure, clear finishes where yellowing matters, and applications calling for a low-volatility, low-odour initiator. It performs particularly well in thin films.
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-ONE has no harmonised classification under CLP and is not on the REACH Candidate List. It is not listed in Swiss Annex 10. A specification written around Esacure ONE or KIP 150 applies directly, since the CAS is the same.
Packaging
20 kg cartons. COA per batch, SDS in English, samples available.
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.
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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.
What documents do you provide with each shipment?
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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