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Antioxidant H DPPD N, N-diphenyl-p-phenylenediamine
2.Military factory with more than 40 years history
3.High quality products with GJB standard
4.24 hours effective service
5.MOQ can be 0.01kg
6.We have warehouse in Dalian,Tianjin,Shanghai and so onr.confirm the delivey date
Executive standard: Q/YTH 001-2011
English another name: 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
1.4 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:
Item |
Index |
||
Refined |
1stgrade |
2ndgrade |
|
Initial melting point,℃ |
≥140.0 |
≥135.0 |
≥125.0 |
Ash content ,%(m/m) |
≤0.40 |
≤0.40 |
≤0.40 |
Decrement by heating ,%(m/m) |
≤0.40 |
≤0.40 |
≤0.40 |
Remainder through sieving (100 mesh),% (m/m) |
≤1.0 |
≤1.0 |
≤1.0 |
Appearance |
Greyish brown powder |
3. Uses: 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. Operation must be installed with rubber gloves, a respirator and eye protection by wearing protective clothing.
5. Package: Woven bag with inner plastic bag, 20 kg net each.
6. Storage: Store at cool, dry and ventilate. Shelf life of 12 months, if expire, still used if up to standard through retest.
7. Transportation: Avoid rain, moist, high temperature.
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