September 27, 2023 Longchang Chemical

What is the difference between the plasticizer DOP and DOTP?

Difference between plasticizer DOP and DOTP

1、Introduction of both

DOP plasticizer: the chemical name is dioctyl phthalate, it is a general-purpose plasticizer, and its plasticizing effect is caused by the weakening of the aggregation between molecular chains in the polymer material.DOP plasticizer is mainly used in the processing of polyvinyl chloride grease, but DOP plasticized PVC is mainly used in artificial leather, films, wires and cables, packaging materials and so on.

DOTP plasticizer: the chemical name is dioctyl terephthalate, and its liquid form is a colorless low viscosity liquid, which is mostly used in high temperature resistant and insulated products of various types, such as: cable protection cover, PVC soft products, artificial leather, etc.

2、Different advantages

DOP plasticizer: For DOP plasticizer, cold resistance is excellent, the condensation point is 4 ℃, and can be in -18 ℃ can also be normal production.

DOTP plasticizer: with high temperature resistance, cold resistance, resistance to extraction, non-volatile, electrical insulation and good softness, can effectively improve the hardness of the product and the role of deformation. It is an ideal substitute for DOP plasticizer.

DOTP plasticizer

3、Different application scope

DOP plasticizer: It is widely used in the processing of polyvinyl chloride resin, acetate resin, rubber, ABS resin and other polymers, and it can also be used in dyestuffs, dispersants, lacquers and so on.

DOTP plasticizer: Because of its high temperature resistance, high insulation performance in a variety of products, such as: is the production of temperature-resistant 70C cable material, or instead of DOP plasticizer used in PVC artificial leather, pvc film, packaging materials, wires and cables, etc., but also can be used in neoprene rubber, nitrile rubber, EPDM rubber and other products as a softener.

4、Environmental protection

DOP plasticizer: a small amount of inhalation of DOP plasticizer will cause shortness of breath and increased heart rate, a large number of inhalation of central system disorders and gastrointestinal discomfort, serious and even affect fetal development resulting in malformations, Europe and the United States have been strictly controlled the use of DOP plasticizer, such as exports from the country need to go through a quality test, to ensure that it complies with environmental protection standards.

DOTP plasticizer: DOTP is a p-phenylene product, which meets the requirements of the European Union and can be used instead of DOP, and is an ideal substitute for DOP.


Is plasticizer in plastic wrap harmful to human body? How to use it correctly
Cling film has now become one of the essential daily necessities of our lives, the family did not finish the dishes, plastic wrap cover, put into the refrigerator; fruit did not finish, plastic wrap wrap, put into the refrigerator. Even farmers markets, supermarkets to buy fruits and vegetables, meat, snacks will be wrapped in plastic wrap. But there are questions about whether plasticizer plastic wrap is harmful to the human body? And how to normal use of plastic wrap?
First, there are three main types of cling film on the market at present

1, polyethylene, referred to as PE, this material is mainly used for food packaging, the market sale of household cling film is this kind.

2, polyvinylidene dichloride, referred to as PVDC, oxygen barrier is relatively good, long freshness, mainly used for cooked food, ham and other products packaging. However, the price of this material is relatively high, the production process is difficult, so the market is less of this kind of plastic wrap.

3, polyvinyl chloride, referred to as PVC, is processed by the PVC resin to add a large number of plasticizers (DHEA) and other additives, supermarket purchases, packaging food more than this cling film. pvc cling film transparency, not easy to rupture, has a good viscosity, and the price is lower.

Second, the cling film is harmful

People’s concerns about cling film, mainly in the cling film added plasticizer components such as DEHA (adipic acid di (2-ethylhexyl) ester), DEHP (phthalic acid di (2-ethylhexyl) ester), etc., that these substances can lead to precocious puberty, infertility and so on. The dosage of plasticizers required for the above three types of films is PVC>PVDC>PE, which means that more plasticizers need to be added to PVC cling film.

There are various types of plasticizers, and different types have different characteristics. For example, DEHA is very low, while DEHP shows slight organ coefficient changes and potential effects in animal experiments at relatively low doses (60-195mg/kg/d). Because of this, the Hygienic Standard for the Use of Additives in Food Containers and Packaging Materials has different regulations for the two: the migration amount of DEHA shall not be more than 18mg/kg; the migration amount of DEHP shall not be more than 1.5mg/kg, and DEHP can only be used in contact with non-fatty food materials and shall not be used in materials used for baby food. Therefore, as long as the production in accordance with home standards, according to the business tips to use, cling film products are generally safe.

Third, how to use the scientific use of plastic wrap

1, PE, PVC film should not be heated

Cooked food, hot food, food containing fat do not use plastic wrap packaging storage. Because these foods and plastic wrap contact, it is easy to make the chemical ingredients contained in its materials volatile, dissolved into the food, is not good for health.

2, the plastic wrap do not directly touch the food

In the use of microwave heating covered with plastic wrap food, but also try to avoid food and plastic wrap contact, especially oily food. Heating food covered with utensils of plastic wrap should be tied on a few small holes to avoid rupture.

3, not all food is suitable for plastic wrap

For fresh meat and cooked food preservation, the key role is the temperature, the role of cling film is limited. Cut the watermelon covered with plastic wrap placed in the refrigerator, the number of bacteria in the incision than not covered with plastic wrap direct refrigeration more, to maintain the freshness period, if not using plastic wrap fruit will be better. Leafy vegetables are not suitable for long-term wrapping with plastic wrap, because of which the water does not evaporate out of the more prone to rot.

4, for the safety hazards in the supermarket, consumers can take measures

Supermarkets used to wrap food cling film may also use PVC material. Most of the cooked food in the supermarket happens to be high-fat food. After a long time of wrapping, the oils and fats in the food will easily dissolve the harmful substances in the plastic wrap, which will affect human health after consumption.

Flame retardant plasticizers of the same series

Synoflex® T-50 T-50; ASE CAS 91082-17-6
Synoflex® ATBC Acetyl tributyl citrate CAS 77-90-7
Synoflex® TBC Tributyl citrate CAS 77-94-1
Synoflex® TCPP TCPP flame retardant CAS 13674-84-5
Synoflex® DOTP Dioctyl terephthalate CAS 6422-86-2
Synoflex® DEP Diethyl phthalate CAS 84-66-2
Synoflex® TEC triethyl citrate CAS 77-93-0
Synoflex® DOA Dioctyl adipate CAS 123-79-5
Synoflex® DINP Diisononyl Phthalate CAS 28553-12-0/685 15-48-0
Synoflex® TMP Trimethylolpropane CAS 77-99-6
Synoflex® TEP Triethyl phosphate CAS 78-40-0
Synoflex® TOTM Trioctyl trimellitate CAS 3319-31-1
Synoflex® BBP Bio-based plasticizers, High-efficiency plasticizer
Synoflex® TMP Trimethylol propane CAS 77-99-6
Sinoflare® TCEP Tris(2-chloroethyl) phosphate CAS 115-96-8
Sinoflare® BDP Bisphenol-A bis(diphenyl phosphate) CAS 5945-33-5
Sinoflare® TPP Triphenyl phosphate CAS 115-86-6

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