NTIOXIDANT H
- Executive standard: Q/YTH 001-2006
- English name: Antioxidant H
- English another name: N,N-diphenyl-p-phenylenediamine
- English abbreviation: DPPD
- CAS RN :74-31-7

1.Physical and chemical properties:
1.1 Appearance: Greyish brown powder
1.2 Molecule formula: C18H16N2
1.3 Molecule weight: 260.34
1.4 Ash content , %(m/m): ≤O.40
1.5 Specific gravity: 1.2
1.6 Solubility: Dissolve in benzene, toluene, ether, acetone. Dissolve slightly in ethanol. Undissolved in water.
1.7 Boiling point : 220-225°C 0.5mmHg
1.8 Stability and reactivity : It’s flammable. When it’s exposed to air or sunlight the product will be oxidized and changed its color. When contacting with hot dilute hydrochloric acid it becomes green.
2. Technique indexes:

3. Uses:It’s used for those rubbers and latices of natural, styrene-butadiene, acrylonitrile-butadiene,cis-1,4-polybu tadiene,butyl,butylhedroxyl,cis-1,4-polyisopreneetc,so that to possess them those properties such as good
resistance to many times of flexure and chap-resisting , highten the elongating strength , strengthen the defending function to hot-oxygen , ozone and some harmful metals such as copper , manganese and so on , and do not influence vulcanization of those rubbers. It can be resolved manifold problems existing in the deep-color rubber products while antioxidant H is used together with antioxidant D.Moreover it can be also used as the hotoxygen stabilizer for those engineering plastics such as polyethylene, polypropylene, polyamide, polyformaldehyde and etc to improve their climate-resisting performance. The referential dosage is 0.2-0.3%.
4. Safety notes:The product is considered toxic. When handling it should be worn dust gauze mask, rubber gloves and rubberized fabric protection clothing.
5. Package:Laminated film knitting bag, in which is put plastic bag, net weight 20 kg a bag.
6. Storage:Keep in a shady and ventilating place. Its shelf life is 12 months. The product can be still used if up to standard through retest after the specified date.
7. Transportation:Prevent high temperature, sun-scorched and rain drenched during transportation .
Yingkou Tanyun Chemical Research Institute Corporation
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Location:East No. 1, Xinlian St., Coastal Industrial Base Management Committee, Yingkou, Liaoning, China (Mainland)
Total Employees: 201 - 300 People
Year Established: 1995
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Overseas Office: No
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