Antioxidant DTBHQ

White or off-white crystalline powder; moderate smell, non-toxic; most important issue content ≥98.5%; relative density 1.09; melting point 212-218℃; solubility (g/100g solvent, 25℃): ethanol 35.1, acetone 39.0, ethyl acetate forty eight.eight, benzene 1.5, insoluble in fuel, insoluble in water; colorless, non-polluting, smooth to disperse, and so forth.

Characteristicsf DTBHQ:

Chemical call: 2,five-di-tert-butylhydroquinone (2,5-di-tert-butylhydroquinone)

Abbreviation: DTBHQ

English name: 2,five-di-tert-butylhydroquinone (DTBHQ)

Molecular formula: C₁₄H₂₂O₂

Molecular weight: 222.33

Type belongs to: polyphenols CAS: 88-58-4 EINEC:201-841-8

Structural method:

Bodily residences: white or off-white crystalline powder; slight odor, non-toxic; principal component content material ≥98.5%; relative density 1.09; melting point 212-218℃; solubility (g/100g solvent, 25℃): ethanol 35.1, acetone 39.0, ethyl acetate forty eight48.8, benzene 1.5, insoluble in gas, insoluble in water; colorless, non-polluting, easy to disperse, and so on.

Scope of use:

DTBHQ is appropriate for most natural polymers and is one of the maximum extensively used commercial antioxidants, in addition to a polymerization inhibitor for a selection of polyesters. It is able to be carried out inside the following materials and products:

A. All kinds of rubber: herbal rubber (NR), neoprene rubber (CR), nitrile rubber (NBR), epdm, butadiene rubber (BQ), butadiene rubber (SBR) and different synthetic rubber and latex antioxidant DTBHQ, can put off the oxidation of vulcanized rubber and unvulcanized rubber and UR growing old, is a non-polluting rubber products, sunlight does now not trade the shade of the non-coloration DTBHQ is a non-polluting antioxidant, easy to disperse, has no effect on vulcanization, and is better than the standard antioxidants in terms of oxidation resistance. The powerful amount is 0.5-1%.

B. DTBHQ can be used as an antioxidant for lubricants, biodiesel (fuel oil) and grease (such as cosmetics). DTBHQ can interrupt the chain response of oxidation and lengthen the oxidation induction duration. DTBHQ has a high melting factor and can be added to biodiesel (gas) to improve its high temperature resistance and prevent oxidation deterioration under high temperature. It's miles more powerful whilst used in aggregate with phosphite and thioether auxiliary antioxidants.

C. DTBHQ can strongly take in 280-3l0nm wavelength ultraviolet light, is polyvinyl chloride (PVC), polystyrene (PS), polycarbonate (PC), polyethylene (PE), polypropylene (PP), abs and polyester resins (along with polyester) and other polyolefin fibers and films of mild and heat stabilizer, but also an awesome light stabilizer for polyformaldehyde. Because DTBHQ has mild and heat stability, no coloring, so it is particularly appropriate for the manufacture of mild-colored rubber merchandise, scientific components, latex products and adhesive tape, the overall dosage of 0.3-0.5%.

D. DTBHQ is a variety of resin monomer polymerization inhibitor, it's far butadiene, ethyl phosphate acetate, styrene and other vinyl monomers have correct polymerization blockading effect, and the impact is long lasting and does no longer exchange coloration, substantially better than "hydroquinone". It can slowly react with loose radicals over an extended time frame and soak up the unfastened radicals generated within the garage of unsaturated and polyester resins. It could improve the garage balance of resin with minimal impact on gelation time, specially in low-pressure surroundings, and can play an awesome position in blocking off polymerization.

E. Shade photosensitive substances within the process and garage, because of the developer's oxidation merchandise in the emulsion layer between the diffusion due to the non-selective generation of dyes, in order that the photosensitive houses exchange and convey grey mist pollution, the addition of dtbhq can avoid the prevalence of this phenomenon.

In addition, DTBHQ may be used as mild stabilizer and antioxidant in paint, lacquer, polyester kind adhesive and other merchandise.

Usage:

It's miles used in the identical manner as usually used antioxidant, antioxidant, polymerization inhibitor and light stabilizer. In artificial rubber, DTBHQ has fantastic impact when used with antioxidant DNP. The same old dosage range of DTBHQ is:0.1%-2%, which may be used with phosphite to in addition enhance the mild and warmth stability.

Storage, transportation and packaging specifications:

Store sealed in a fab, dry vicinity away from mild and ignition resources. The product is easily oxidized and discolored after soaking up moisture, so it have to be used up as soon as viable after starting, and be sealed in time to keep it dry. Do no longer keep and delivery with corrosive and toxic materials. Paper barrel covered with plastic bag, net weight 25 kg/barrel.