Antioxidant H CAS NO.74-31-7

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Min.Order: 1 Metric Ton
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Product Details

Keywords

Antioxidant H
DPPD
TANYUN

Quick Details

ProName: Antioxidant H
CasNo: 74-31-7
Molecular Formula: C18H16N2
Appearance: Greyish brown powder
Application: It can be used as the antioxidant in ...
DeliveryTime: 7 days
PackAge: Woven bag with inner plastic bag, 20 ...
Port: dalian
ProductionCapacity: 2000 Kilogram/Week
Purity: 95
Storage: Store at cool, dry and ventilate.
Transportation: Avoid rain, moist, high temperature.
LimitNum: 1 Metric Ton

Superiority

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

1.4 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	1^stgrade	2^ndgrade
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%.