Yellow L1820
pigment yellow 139
CAS: 36888-99-0
Molecular Formula: C16H9N5O6
Yellow L1820 - Names and Identifiers
| Name | pigment yellow 139 |
| Synonyms | 56298 Yellow L1820 pigment yellow 139 Pigment yellow 139 (C.I. 56298) 5,5'-(1H-isoindole-1,3(2H)-diylidene)dibarbituric acid 1,3-Di(2,4,6-trioxohexahydro-5-pyrimidinylidene)isoindole 1,3-Bis(2,4,6-trioxohexahydropyrimidin-5-ylidene)isoindoline 5,5'-(1H-isoindole-1,3(2H)-diylidene)dipyrimidine-2,4,6(1H,3H,5H)-trione 5,5'-[1H-isoindole-1,3-(2H)-diylidene]bis-2,4,6-(1H,3H,5H)Pyrimidinetrione 2,4,6(1H,3H,5H)-Pyrimidinetrione, 5,5-(1H-isoindole-1,3(2H)-diylidene)bis- 5-[3-(2,4,6-Trioxo-1,3-diazinan-5-ylidene)isoindol-1-ylidene]-1,3-diazinane-2,4,6-trione |
| CAS | 36888-99-0 |
| EINECS | 253-256-2 |
| InChI | InChI=1/C16H9N5O6/c22-11-7(12(23)19-15(26)18-11)9-5-3-1-2-4-6(5)10(17-9)8-13(24)20-16(27)21-14(8)25/h1-4,17H,(H2,18,19,22,23,26)(H2,20,21,24,25,27) |
Yellow L1820 - Physico-chemical Properties
| Molecular Formula | C16H9N5O6 |
| Molar Mass | 367.27 |
| Density | 1.696±0.06 g/cm3(Predicted) |
| pKa | 5.56±0.20(Predicted) |
| Refractive Index | 1.698 |
| Physical and Chemical Properties | hue or shade: red and yellow density/(g/cm3):1.74 Bulk density/(lb/gal):3.3;5.0 average particle size/μm:154-339 specific surface area/(m2/g):22;22;55 oil absorption/(g/100g):45-69 hiding power: translucent diffraction curve:  reflection curve:  |
| Use | there are 20 kinds of commercial dosage forms of the pigment. Suitable for paint, plastic and ink red and yellow, different particle size distribution shows different color characteristics, hue angle according to the average particle size of 78, 71, 66 degrees; the non-transparent type exhibits stronger red light (the specific surface area of Paliotol Yellow 1970 is 22 m2/g, the specific surface area of L2140HD is 25 m2/g), and increasing the concentration does not affect the gloss, it has excellent light and weather fastness; It is used in combination with inorganic pigment instead of chrome yellow. Suitable for high-grade coatings (automotive repair paint), in alkyd melamine resin light resistance up to 7-8 (1/3sd); In the soft PVC bleeding resistance, in HDPE (1/3sd) temperature resistance 250 ℃, suitable for polypropylene, unsaturated |
Yellow L1820 - Reference Information
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| use | pigment yellow 139, English name is pigment yellow 139, Chinese alias is C.I pigment yellow 139, suitable for red yellow of coatings, plastics and printing inks, is a high-performance organic yellow pigment, strong coloring power, good firmness, widely used in printing ink and plastic products coloring, especially some high-performance industrial products. different particle size distributions show different color characteristics, and the hue angle can be 78, 71 and 66 degrees according to the average particle size. The non-transparent type presents stronger red light (Paliotol Yellow 1970 specific surface area is 22 m2/g,L2140HD specific surface area is 25 m2/g), increasing the concentration does not affect the gloss, and has excellent light resistance and climate fastness. Combine with inorganic pigments instead of chrome yellow. Suitable for high-grade coatings (auto repair paint), with light resistance of 7-8 grade (1/3SD) in alkyd triamine resin. although the thermal stability limit temperature of pigment yellow 139 is 260 ℃, the stability of pigment yellow in plastic processing is not high, and it can be mainly used for plastic products with low processing temperature, such as PVC and low density polyethylene. For resins with high processing temperature, such as PET,PMMA,PC,PA, etc., pigment yellow 139 will change color and decompose during processing. |
| production method | this product is obtained by condensation of diiminoisindoline and barbituric acid. the phthalonitrile is added into the methanol solution of sodium cyanamide at 30~35 ℃, and stirred overnight at room temperature to obtain the product diimino isoindoline. Diiminoisoindoline and barbituric acid are condensed in an aqueous medium containing formic acid at 60°C to obtain a yellow pigment. |
Last Update：2024-04-09 15:16:45
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Product Name: 2,4,6(1H,3H,5H)-Pyrimidinetrione, 5,5'-(1H-isoindole-1,3(2H)-diylidene)bis- Visit Supplier Webpage Request for quotationCAS: 36888-99-0
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Spot supply
Product Name: 2,4,6(1H,3H,5H)-Pyrimidinetrione, 5,5'-(1H-isoindole-1,3(2H)-diylidene)bis- Visit Supplier Webpage Request for quotationCAS: 36888-99-0
Tel: 400-968-2212
Email: 3623107365@qq.com
Mobile: 18916960931
QQ: 3623107365
Wechat: 18916960931
Spot supply
Product Name: Pigment Yellow 139 Visit Supplier Webpage Request for quotationCAS: 36888-99-0
Tel: 609-228-6898
Email: sales@medchemexpress.com
tech@medchemexpress.com
Mobile: 609-228-6898
Spot supply
Product Name: 246(1H3H5H)-Pyrimidinetrione Visit Supplier Webpage Request for quotationCAS: 36888-99-0
Tel: +86 0571-86722205
Email: sales@chinaskyrun.com
Mobile: +8618958170122
QQ: 2531159185
Wechat: chinaskyrun
View History
Yellow L1820
1315499-97-8
DL-Dapoxteine HCL
Isophthaloyl hydrazide
手性肌醇
5368-28-5
1028268-32-7
BB-78485
20592-38-5
SALOR-INT L170127-1EA
1315499-97-8
DL-Dapoxteine HCL
Isophthaloyl hydrazide
手性肌醇
5368-28-5
1028268-32-7
BB-78485
20592-38-5
SALOR-INT L170127-1EA