Antioxidant H-Tanyun

详情页(上).jpg Product parameters

Executive standard: Q/YTH 001-2011

Chines alias: N,N’-二苯基对苯二胺

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:

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
Item	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. 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..

5. Packing: Woven bag lined with plastic bag, net weight 20 kg/bag.

6. Storage: Stored in a cool, ventilated place. The shelf life is 12 months after manufacturer date. It is still available if retest result is qualified after expire date

7. Transportation: Avoid rain, exposure, high temperature.

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Customization

We are able to develop custom-made products according to the clients'requests

● We have 4 R&D bases (Shanghai, Hangzhou, Suzhou, Yingkou), hundreds of synthesis leading experts and PhDs in chemistry.

● We own experienced R&D capability and rich experience in production, and provides you with a variety of organic chemicals, medical intermediates research, development, production, etc. on behalf of a range of high quality customized service.

● We have developed over 20 kinds of custom chemicals for the customers, and 3 kind products, such as copper chromite dehydrogenation catalyst, have already consigned a usage in batch with customer sign-off. 2 invention patents have been applied. 6 kinds of customized products, such as efficient curing agent, have been applied in pilot trials and pilot production by customers.

● More than 10 kinds of chemicals have been in R&D, such as nano-waterproof materials, oil additives and fine chemical intermediates.

E-mail: cata@tanyunchem.com

Tel: +86-755-26406100

Fax: +86-755-26407171

Address :

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