84632-65-5

Basic information

• Product Name: Pigment Red 254
• Synonyms: Paintco red 254;2,5-Dihydro-3,6-bis(4-chlorophenyl)pyrrolo[3,4-c]pyrrole-1,4-dione;3,6-Bis(4-chlorophenyl)-1,2,4,5-tetrahydro-2,5-diazapentalene-1,4-dione;3,6-Bis(4-chlorophenyl)pyrrolo[3,4-c]pyrrole-1(2H),4(5H)-dione;3,6-Bis(4-chlorophenyl)pyrrolo[3,4-c]pyrrole-1,4(2H,5H)-dione;PIGMENT RED 2254;PIGMENT RED 254;4-c]pyrrole-1,4-dione,3,6-bis(4-chlorophenyl)-2,5-dihydro-pyrrolo[
• CAS NO: 84632-65-5
• Molecular Formula: C₁₈H₁₀Cl₂N₂O₂
• Molecular Weight: 357.19
• EINECS: 401-540-3
• Mol File: 84632-65-5.mol
• Article Data: 15

Chemical Properties

• Boiling Point: 672.5 °C at 760 mmHg
• Flash Point: 360.5 °C
• Appearance: red powder
• Density: 1.57
• Vapor Pressure: 6.05E-18mmHg at 25°C
• Refractive Index: 1.732
• Storage Temp.: Sealed in dry,Room Temperature
• Solubility: 10 in mg/100g standard fat at 20 ℃
• PKA: 8.46±0.60(Predicted)
• Water Solubility: 400-30000ng/L at 20-23℃
• CAS DataBase Reference: Pigment Red 254(CAS DataBase Reference)
• NIST Chemistry Reference: Pigment Red 254(84632-65-5)
• EPA Substance Registry System: Pigment Red 254(84632-65-5)

Safety Data

• Hazardous Substances Data: 84632-65-5(Hazardous Substances Data)

Usage

Uses

3,6-Bis(4-chlorophenyl)pyrrolo[3,4-c]pyrrole-1,4(2H,5H)-dione is Pigment Red 254; used in preparation method of high-performance polyurethane waterborne waterproof coating.

Properties and Applications

TEST ITEMS SPECIFICATION APPEARANCE RED POWDER SHADE CLOSE TO CIBA BO,OPAQUE HEAT RESISTANCE 300 °C min LIGHT FASTNESS 8 ACID RESISTANCE 5 ALKALI RESISTANCE 5 FASTNESS TO BLEEDING 5 OIL ABSORPTION 40-50% SPECIFIC SURFACE 28 m 2 /g DENSITY 1.60 g/cm 3 RESIDUE ON 80 MESH 5.0% max WATER SOLUBLE 1.0% max VOLATITE 105 °C 1.0% max TINTING STRENGTH 100-105 %

TEST ITEMS

SPECIFICATION

APPEARANCE

RED POWDER

SHADE

CLOSE TO CIBA BO,OPAQUE

ACID RESISTANCE

5

ALKALI RESISTANCE

5

FASTNESS TO BLEEDING

5

OIL ABSORPTION

40-50%

DENSITY

1.60 g/cm 3

RESIDUE ON 80 MESH

5.0% max

WATER SOLUBLE

1.0% max

VOLATITE 105 °C

1.0% max

TINTING STRENGTH

100-105 %

InChI:InChI=1/C18H10Cl2N2O2/c19-11-5-1-9(2-6-11)15-13-14(18(24)21-15)16(22-17(13)23)10-3-7-12(20)8-4-10/h1-8H,(H,21,24)(H,22,23)

Upstream product

• 623-03-0 4-Cyanochlorobenzene 
• 123-25-1 succinic acid diethyl ester 
• 215816-90-3 C₁₃H₁₇N₃O 
• 623-00-7 4-bromobenzenecarbonitrile 
• 135295-79-3 C₁₃H₁₇N₃O 
• 924-88-9 diisopropyl succinate 
• 117482-76-5 4-n-octadecylthiobenzonitrile 
• 100-47-0 benzonitrile 

Downstream Products

• 937802-88-5 C₂₂H₁₇Cl₂N₂O₅S^(1-)*K⁽¹⁺⁾ 
• 331678-10-5 2,5-dibenzyl-3,6-bis(4-chlorophenyl)-2,5-dihydropyrrolo[3,4-c]pyrrole-1,4-dione 
• 1236069-59-2 C₂₀H₁₄Cl₂N₂O₂ 
• 96159-15-8 C₂₂H₁₈Cl₂N₂O₂ 
• 1236069-65-0 C₂₅H₂₄Cl₂N₂O₂ 
• 1236069-63-8 C₂₃H₂₀Cl₂N₂O₂ 
• 1236069-64-9 C₂₄H₂₂Cl₂N₂O₂ 
• 1236069-66-1 3,6-bis(4-chlorophenyl)-2-octylpyrrolo[3,4-c]pyrrole-1,4(2H,5H)-dione 
• 1236069-67-2 C₂₇H₂₈Cl₂N₂O₂ 
• 1236069-60-5 3,6-bis(4-chlorophenyl)-2-propyl-2,5-dihydropyrrolo[3,4-c]pyrrole-1,4-dione 
• 1236069-62-7 C₂₂H₁₈Cl₂N₂O₂ 
• 1236069-61-6 C₂₁H₁₆Cl₂N₂O₂ 

Relevant articles and documents

Direct Transition from Triplet Excitons to Hybrid Light-Matter States via Triplet-Triplet Annihilation

Strong light-matter coupling generates hybrid states that inherit properties of both light and matter, effectively allowing the modification of the molecular potential energy landscape. This phenomenon opens up a plethora of options for manipulating the properties of molecules, with a broad range of applications in photochemistry and photophysics. In this article, we use strong light-matter coupling to transform an endothermic triplet-triplet annihilation process into an exothermic one. The resulting gradual on-off photon upconversion experiment demonstrates a direct conversion between molecular states and hybrid light-matter states. Our study provides a direct evidence that energy can relax from nonresonant low energy molecular states directly into hybrid light-matter states and lays the groundwork for tunable photon upconversion systems that modify molecular properties in situ by optical cavities rather than with chemical modifications.

Sugar molecules coupled diketopyrrolo pyrrole compound in the application in the preparation of yellow pigment, yellow pigment and a yellow pigment preparation method

The invention relates to application of a sugar molecule coupling diketopyrrolopyrrole compound shown as a general formula (I) to preparation of a yellow pigment, wherein R1 is H, Br, Cl, F, CN, C1-8straight chain or branch-chain alkyls, substituted or unsubstituted aromatic alkyls, C1-8 straight chain or branch-chain alkyls, and C1-8 single-substituted or double-substituted amino groups; A is mono-glycosyl, di-glycosyl or tri-glycosyl; B is H or the mono-glycosyl, di-glycosyl or tri-glycosyl identical to the A. The invention also relates to the yellow pigment and a preparation method of theyellow pigment. The formula I is shown in the description.

Preparation and characterizations of solvent soluble dyes based on dimerized diketo-pyrrolo-pyrrole pigment

We have prepared three pigments and six soluble dyes with thermal stability derived from diketo-pyrrolo-pyrrole (DPP) pigment by N-alkylation and dimerization. Synthesized dyes and pigments were measured by an absorption maximum (λmax) and thermal stability using a UV-VIS spectrophotometer and thermogravimetric analysis (TGA) respectively, comparing with C.I. Pigment Red 254. These dyes exhibited superior solubility to the organic solvents by introducing the linking group (n-octyl). DPP pigments have inferior thermal and solvent stability, which has so far inhibited their commercial adoption in color filter fabrication. The thermal stability of the N-alkylated dyes can be highly contributed by both the carbon number and their shapes of N-alkyl group in DPP ring.