| Model: | 74-31-7 |
|---|---|
| Brand: | TANYUN |
| Origin: | Made In China |
| Category: | Chemicals / Chemical Auxiliary & Catalyst / Chemical Auxiliary |
| Label: | Antioxidant H , 74-31-7 , tanyun |
| Price: |
US $40
/ kg
|
| Min. Order: | 1 kg |
| Last Online:29 Oct, 2018 |
Antioxidant H
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
1.3 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:
|
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 de ng 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.
In addition：The company could research and develop the new products according to the special demand of our clients．
