Specialty Additives Available — Bulk Only

Photoinitiator 1173 (2-Hydroxy-2-methyl-1-phenylpropan-1-one)

CAS 7473-98-5 · Formula C10H12O2 · MW 164.20 g/mol

Liquid Type I alpha-hydroxyketone photoinitiator for fast, low-yellowing surface cure of clear UV coatings (Coatings & Construction) Highly compatible liquid for UV/UV-LED clear inks and overprint varnishes (Industrial Manufacturing) Cures clear UV-curable adhesives and plastics; common blend partner with TPO (Plastics & Polymers)

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CAS Number
7473-98-5
Formula
C10H12O2
Molecular Weight
164.20 g/mol
Material Family
Specialty Additives
At a Glance
Material Family
Specialty Additives
Primary Role
Crosslinking / Curing
Functional Roles
Applications & Use Cases
  • Liquid Type I alpha-hydroxyketone photoinitiator for fast, low-yellowing surface cure of clear UV coatings (Coatings & Construction)
  • Highly compatible liquid for UV/UV-LED clear inks and overprint varnishes (Industrial Manufacturing)
  • Cures clear UV-curable adhesives and plastics; common blend partner with TPO (Plastics & Polymers)
Safety & Handling
Full SDS available on request

A grade-specific Safety Data Sheet (SDS) — with the complete hazard classification, handling precautions, and transport information — is supplied with every shipment and available on request. Confirm all safety and regulatory details against the SDS for your specific grade.

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Chemical Identity
CAS Number
7473-98-5
Molecular Formula
C10H12O2
Molecular Weight
164.20 g/mol
IUPAC Name
2-hydroxy-2-methyl-1-phenylpropan-1-one
PubChem CID
InChI Key
XMLYCEVDHLAQEL-UHFFFAOYSA-N
XLogP
1.5
Full Description

Liquid Type I alpha-hydroxyketone photoinitiator for fast, low-yellowing surface cure of clear UV coatings (Coatings & Construction) Highly compatible liquid for UV/UV-LED clear inks and overprint varnishes (Industrial Manufacturing) Cures clear UV-curable adhesives and plastics; common blend partner with TPO (Plastics & Polymers)

Frequently Asked Questions

Is Photoinitiator 1173 an equivalent to Darocur 1173?

Photoinitiator 1173 is the generic Type I/II photoinitiator commonly sold as Darocur 1173. RawSource supplies an independent equivalent — verified to your specification and Certificate of Analysis — and is not affiliated with, authorized by, or endorsed by IGM Resins.

What is 2-Hydroxy-2-methyl-1-phenylpropan-1-one (1173) (CAS 7473-98-5)?

2-Hydroxy-2-methyl-1-phenylpropan-1-one (1173) (CAS 7473-98-5) is a crosslinking / curing agent supplied by RawSource in bulk. Liquid Type I alpha-hydroxyketone photoinitiator for fast, low-yellowing surface cure of clear UV coatings (Coatings & Construction)

What is the molecular formula and weight of 2-Hydroxy-2-methyl-1-phenylpropan-1-one (1173)?

Molecular formula C10H12O2, molecular weight 164.20 g/mol. IUPAC name: 2-hydroxy-2-methyl-1-phenylpropan-1-one

Is 2-Hydroxy-2-methyl-1-phenylpropan-1-one (1173) hazardous?

Yes

Disclaimer. Information on this page — including properties, identifiers, hazard, transport (DOT/UN) and tariff (HS) classifications, and applications — is provided for general reference and is compiled from authoritative public sources (e.g. PubChem/ECHA, 49 CFR 172.101, the Harmonized Tariff Schedule). Values are typical and are not a guaranteed specification; the Certificate of Analysis (CoA) for the lot purchased governs. Products are sold for industrial and professional use only. Nothing here is a medical, health, or efficacy claim or advice. Always consult the current Safety Data Sheet (SDS) before handling, storage, transport or disposal, and confirm regulatory status, classification and suitability for your application and jurisdiction. Hazard, transport and tariff classifications must be verified for your specific shipment. RawSource makes no warranty, express or implied, and assumes no liability for use of this information. Trademarks. Third-party trademarks and brand names are the property of their respective owners; any reference is nominative — used only to identify a comparable product — and does not imply affiliation with, sponsorship by, or endorsement by the trademark owner.