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PHOTOINITIATOR TPO CAS NO.75980-60-8

Inquiry
  Post Date: Mar 16,2023
  Expiry Date: Mar 15,2024
  Detailed Description: Cas No. :75980-60-8 Quantity: 50Metric Tons
Price:Negotiable USD Metric Tons
Payment Method: T/T,L/C,D/P
PHOTOINITIATOR TPO
Technical Data Sheet (TDS)

Chemistry
Chemical name: Diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide
CAS No.:75980-60-8
Molecular formular:C22H21O2P
Molecular weight:348.37
Molecular structure


Specification
Appearance: Pale yellow crystal powder
Purity, %: ≥99.0 (HPLC)
Melting point,℃:91.0-94.0
Volatility, %: ≤0.2
Acid value (mgKOH/g): ≤0.5


Application
TPO is an efficient free radical photoinitiator with absorption in a long wavelength range. Its effective absorption peak is 350-400nm and it always absorbs about 420nm. Its absorption peak is longer than that of the conventional initiator. After irradiation, two free radicals, benzoyl and phosphatidyl, can be formed, which can initiate polymerization. It is a photoinitiator for curing styrene-based unsaturated polyesters and acrylic resins. Its absorption in the long-wave region of the UV spectrum can fully cure even white paints and surfaces pigmented with TiO2. Such coatings are characterized by particularly low yellowing. TPO can also be used to cure clear coatings and is particularly suitable when low-odor products are desired. Recommended applications: screen inks white coatings, flexo inks wood coatings, overprint varnishes printing plates etc.The thermal stability of TPO is excellent. It is heated to 180℃ without chemical reaction and has good storage stability.


Package
20kg/carton, or as per customer’s request.


Storage
TPO is sensitive to visible light and any exposure to sunlight should beavoided. Kept at low, ambient temperature and dry conditions.Avoid contacting with strong oxidants.The product is stable for 2 years if stored in original,sealed containers under above-mentioned conditions.


Recommended Dosage
0.3-0.5% in clear coatings and 0.5-3.0% in pigmented coatings.

  CAS Registry Number:

75980-60-8

  Synonyms: ;2,4,6-Trimethylbenzoyldiphenyl Phosphine Oxide;2,4,6-Trimethylbenzoyldiphenylphosphine oxide;TPO;Diphenyl (2,4,6-trimethylbenzoyl) phosphine oxide;Photoinitiator-TPO;(diphenylphosphoryl)(2,4,6-trimethylphenyl)methanone;Diphenyl (2,4,6-trimethylbenzoyl)-phosphine oxide;(2,4,6-trimethyl benzoyl) diphenyl phosphine oxide;Photoinitiator TPO;Trimethyl-Benzoyl-Diphenyl-Phosphine-oxide;
  Molecular Formula: C22H21O2P
  Molecular Weight: 348.3747
  Molecular Structure: 75980-60-8 Diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide
  Safety Description: S22:;
S24/25:;

  Company: Guangzhou Chengshuai New Material Co.,Ltd.     [ China ]        
  Contact: David
  Tel: 862034708468
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