Photoinitiator 369 CAS 119313-12-1 2-Benzyl-2-(dimethylamino)-4′-morpholinobutyrophenone

Photoinitiator 369 CAS 119313-12-1 2-Benzyl-2-(dimethylamino)-4′-morpholinobutyrophenone Information

CAS	119313-12-1
Molecular formula	C23H30N2O2
Molecular weight	366.5
EIENCS	404-360-3
Form	powder to crystal
Melting point	116-119 °C (lit.)
boling point	528.8±50.0 °C(Predicted)
Density	1.094±0.06 g/cm3(Predicted)
Solubility	3240 in mg/100g standard fat at 20 ℃
PKA	7.04±0.50(Predicted)
Color	Light orange to Yellow to Green
Storage temp

What is Photoinitiator 369 CAS 119313-12-1 2-Benzyl-2-(dimethylamino)-4′-morpholinobutyrophenone?

Chemical name: 2-benzyl-2 -(dimethylamino)-1-(4-morpholine phenyl) butanone

Molecular formula: C₂₃H₃₀N₂O₂

Molecular weight: 366.5 g/mol

CAS Number: 119313-12-1

Appearance: Light yellow to white crystalline powder (Some suppliers mark it as white powder)

Melting point: 110-119°C

Absorption wavelengths: 232-233nm and 323-324nm (in methanol solution), covering the range from UV-A to visible light

Type: α -aminolone cleavage type free radical photoinitiator, which splits by absorbing ultraviolet light to generate free radicals and trigger polymerization reactions.

Core advantages:

Efficient curing of dark systems: High UV absorption, especially suitable for colored systems such as blue and black, and remains effective even in formulations containing UV absorbers (such as SUNSORB1130).

Low odor & low migration: Compared with traditional initiators (such as 907), it has a smaller odor and lower migration, making it suitable for sensitive areas such as food packaging.

Synergistic effect: It is often compounded with thioxanone compounds (ITX, DETX) or acylphosphine oxides (TPO, 819) to enhance the curing speed and depth

Photoinitiator 369 CAS 119313-12-1 2-Benzyl-2-(dimethylamino)-4′-morpholinobutyrophenone Use

Application scenarios

Printing inks: Offset printing ink (2-4%), screen printing ink (2-4% + 1-3% photoinitiator 184), used for PVC cards and packaging materials.

Electronics industry: PCB solder mask ink, photoresist, printed circuit board manufacturing.

Coatings and coatings: UV clear varnish for metal/plastic surfaces, automotive interior paint (1-4%).

Emerging field: LED-UV curing (low energy demand), suitable for light sources with wavelengths ranging from 365 to 395nm.

Compounding plan

Dark system: 369 + ITX/DETX (enhance light absorption efficiency).

High-speed curing: 369 + TPO/819 (strong penetration of thick film), such as the five-component initiation system in the patented formula (containing 369, TPO, and thioxanone).

Photoinitiator 369 CAS 119313-12-1 2-Benzyl-2-(dimethylamino)-4′-morpholinobutyrophenone safety

Health risk:

Low skin irritation, but contact with the eyes may cause corneal damage.

Oral LD₅₀ in rats > 2000 mg/kg (low acute toxicity).

Environmental toxicity

Highly toxic to aquatic organisms (WGK Germany Level 2), entry into water bodies needs to be prevented.

Risk identification: R50/53 (Highly toxic to aquatic organisms).

Protective measures:

Wear impermeable gloves, goggles and dust masks when operating.

Store in a cool and dry place, away from light, sealed and kept away from oxidants.

Deshangchemical Info

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