3,4,9,10-Perylenetetracarboxylic dianhydride (128-69-8)

The systematic name of Perylo[3,4-cd:9,10-c'd']dipyran-1,3,8,10-tetrone is isochromeno[4',5',6':6,5,10]anthra[2,1,9-def]isochromene-1,3,8,10-tetrone. With the CAS registry number 128-69-8, it is also named as 3,4:9,10-Perylenetetracarboxylic anhydride. The product's categories are intermediates of dyes and pigments; aromatic hydrocarbons (substituted) & derivatives; organics; acid anhydrides, etc. (reagents for conducting polymer research); aromatic tetracarboxylic dianhydrides (for high-performance polymer research); electroluminescence; functional materials; reagents for conducting polymer research. It is dark red powder which is insoluble in water and sensitive to moisture. In addition, the other registry numbera are 197501-07-8, 340820-28-2 and 71819-78-8.

The other characteristics of this product can be summarized as: (1)ACD/LogP: 3.01; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 3.01; (4)ACD/LogD (pH 7.4): 3.01; (5)ACD/BCF (pH 5.5): 114.41; (6)ACD/BCF (pH 7.4): 114.41; (7)ACD/KOC (pH 5.5): 1035.29; (8)ACD/KOC (pH 7.4): 1035.29; (9)#H bond acceptors: 6; (10)#H bond donors: 0; (11)#Freely Rotating Bonds: 0; (12)Index of Refraction: 1.973; (13)Molar Refractivity: 109.16 cm³; (14)Molar Volume: 222.3 cm³; (15)Polarizability: 43.27×10^-24 cm³; (16)Surface Tension: 105.1 dyne/cm; (17)Enthalpy of Vaporization: 110.11 kJ/mol; (18)Vapour Pressure: 9.91E-23 mmHg at 25°C; (19)Exact Mass: 392.032088; (20)MonoIsotopic Mass: 392.032088; (21)Topological Polar Surface Area: 86.7; (22)Heavy Atom Count: 30; (23)Complexity: 730.

Preparation of Perylo[3,4-cd:9,10-c'd']dipyran-1,3,8,10-tetrone: Four carboxy imide is obtained by the 1,8-naphthalimide with alkali fusion, and then using concentrated sulfuric acid to deaminize, anhydrate and anhydride. Consumption of raw materials fixed: 1,8-naphthalic anhydride (raw material of 1,8 - naphthalimide s) 2120 kg / t, potassium hydroxide (96%) 6000kg / t, concentrated sulfuric acid 20000kg / t.

Uses of Perylo[3,4-cd:9,10-c'd']dipyran-1,3,8,10-tetrone: It is used as dye intermediates in the synthesis of reducing red K and R. And it is also used for synthetic resin. Besides, this chemical is used for the ceramic paint, polyurethane and polyester paint.

When you are using this chemical, please be cautious about it as the following:
It is irritating to eyes, respiratory system and skin. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. If you want to contact this product, you must wear suitable protective clothing.

People can use the following data to convert to the molecule structure.
1. SMILES: O=C4OC(=O)c3ccc2c1ccc7c6c1c(c5c2c3c4cc5)ccc6C(=O)OC7=O;
2. InChI: InChI=1/C24H8O6/c25-21-13-5-1-9-10-2-6-15-20-16(24(28)30-23(15)27)8-4-12(18(10)20)11-3-7-14(22(26)29-21)19(13)17(9)11/h1-8H.