Inquiry Now

Antioxidant H CAS 74-31-7 Antioxidant DPPD

Product Name	Antioxidant H CAS 74-31-7 Antioxidant DPPD
CAS No.	74-31-7
Appearance	Liquid/Powder
Purity	≥99%, ≥99.9%, ≥95%, Industrial Grade, Technical Grade (Other purities are also available)
Ingredient	C18H16N2
APS	1-5 µM, 10-53 µM, Nano size (Can be customized), Ask for other available size range
Product Code	NCZ-NRQ-412/26

Product Description

CAS RN: 74-31-7

1. Physical and chemical properties:

1.1 Molecular formula: C18H16N2

1.2 Molecular weight: 260.34

1.3 Specific gravity: 1.2

1.4 Solubility: Dissolve in benzene, ether and acetone. Dissolve slightly in ethanol. Insoluble in water.

1.5 Boiling point: 220-225℃, 0.5mmHg

1.6 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.

1.7 Properties: The oxidation of latex and rubber compounds depends on the type of polymer involved. Problems include adverse colour changes, loss of flexibility, loss of tensile strength and reduced impact resistance, ageing, cracking and other surface deterioration. Rubber antioxidants provide critical performance and protection in applications such as rubber and plastics, defending polymers from oxidative degradation due to heat, light, gas fading, peroxides, shear, and other dynamic factors. DPPD antioxidant H provides superior long-term thermal stability and color stability; is effective in film, fiber, and thick cross-section articles; and performs well in filled systems.

Specification

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	Grey or brown powder

Application

Antioxidant H/DPPD 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 to improve their climate-resisting performance.

Use:

1) Antioxidant H/DPPD (N,N’-Diphenyl-p-phenylenediamine) is used as an antioxidant and stabilizer for rubber, petroleum oils and feedstuffs. It is also used as a polymerization inhibitor and a retardant against copper degradation. It is a chemical intermediate to make dyes, drugs, plastics, and detergent additives.
2) Antioxidant H/DPPD is also used in the production of colorless stabilized polyolefins as well as PVC and PVB films.
3) Antioxidant H/DPPD is widely used in most natural and synthetic lattices and rubbers.

Packing:

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

Safety instructions: Toxic. Rubber gloves, respirator and eye protection must be used during operations in case of skin contact, eyes contact..

Transportation: Avoid rain, exposure, high temperature.

Antioxidant H CAS 74-31-7 Antioxidant DPPD Properties /Description

Antioxidant H CAS 74-31-7 Antioxidant DPPD is generally immediately available in most volumes. Nanochemazone produces many standard grades when applicable, including Mil Spec (military grade); ACS, Reagent and Technical Grade; Food, Agricultural, and Pharmaceutical Grade; Optical Grade, USP and EP/BP (European Pharmacopoeia/British Pharmacopoeia) and follows applicable ASTM testing standards. Typical and custom packaging is available. Additional technical, research, and safety (MSDS) information are available, as is a Reference Calculator for converting relevant units of measurement.

Related Information:

Storage Conditions:

Airtight sealed, avoid light, and keep dry at room temperature.

Please get in touch with us for customization and price inquiry

Email: contact@nanochemazone.com

Note: We supply different size ranges of Nano and micron as per the client’s requirements and accept customization in various parameters.

Description

Note: For pricing & ordering information, please get in touch with us at sales@nanochemazone.com
Please contact us for quotes on Larger Quantities and customization. E-mail: contact@nanochemazone.com

Customization:

If you are planning to order large quantities for your industrial and academic needs, please note that customization of parameters (such as size, length, purity, functionalities, etc.) is available upon request.

NOTE:

Images, pictures, colors, particle sizes, purity, packing, descriptions, and specifications for the real and actual goods may differ. These are only used on the website for the purposes of reference, advertising, and portrayal. Please contact us via email at sales@nanochemazone.com or by phone at (+1 780 612 4177) if you have any questions.

Important Notes

Research Use Only: Nanochemazone materials are intended strictly for research and development purposes in laboratory and industrial settings.
No Refunds or Exchanges: All sales are final. Nanochemazone does not permit exchanges or offer refunds under any circumstances.
Customs & Import Responsibilities: Customs clearance, duties, taxes, and tariffs are the sole responsibility of the consignee/importer. Nanochemazone is not liable for delays, rejections, or any additional costs incurred during the customs process, and such issues will not justify order cancellations or refunds.
Order Cancellations: Once an order is placed, it cannot be cancelled. No refunds will be issued for cancelled or undelivered orders.
Indemnification: The buyer agrees to indemnify and hold harmless Nanochemazone, its affiliates, and personnel from any claims, damages, liabilities, or expenses arising from the use of its products or services.
Terms & Conditions: All orders and communications are subject to Nanochemazone’s standard Terms & Conditions.