Woven bag lined with plastic bag, net weight 20 kg/bag.
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Executive standard: Q/YTH 001-2011
English alias: N, N-diphenyl-p-phenylenediamine
English abbreviation: DPPD
CAS RN: 74-31-7
1. Physical and chemical properties:
1.1 Molecular formula: C18H16N2
1.2 Molecular weight: 260.34
1.3 Structure formula:
1.4 Specific gravity: 1.2
1.5 Solubility: Dissolve in benzene, toluene, ether and acetone. Dissolve slightly in ethanol. Insoluble in water.
1.6 Boiling point: 220-225℃, 0.5mmHg
1.7 Stability and reactivity: Flammable. When it’s exposed to air or sunlight, the product will be oxidized and change its color. When contacted with hot dilute hydrochloric acid, it becomes green.
2. Technical indexes:
Initial melting point,℃
Ash content ,%(m/m)
Decrement by heating ,%(m/m)
Remainder through sieving (100 mesh),% (m/m)
Greyish brown powder
3. Application: It can be used as the antioxidant in solid propellant to improve the storage stability of the product. It has been used for those natural, styrene-butadiene, acrylonitrile-butadiene, butadiene, butyl, hydroxyl, polyisoprene rubber to possess performance such as good flex life and crazing for enhancing the tensile modulus, strengthening the defending function to hot-oxygen , ozone and some harmful metals such as copper, manganese with not influence on vulcanization of those rubbers. It can resolve aging problem existing in the deep-color rubber products while antioxidant H is used together with antioxidant D. Moreover, it can be also used as the hot-oxygen stabilizer for those engineering plastics such as polyethylene, polypropylene, polyamide, polyformaldehyde and etc to improve their climate-resisting performance. The reference dosage is 0.2-0.3%.
4. Safety instructions: Toxic. Rubber gloves, respirator and eye protection must be used during operations in case of skin contact, eyes contact..