[Q&A Question 158] 2017.06.07
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This post was last edited by 955559 on 2017-7-21 23:13. [Q&A Question 158] June 7, 2017: What is the difference between paraffin and cerotic wax found in petroleum? The reference answers can be seen after replying; points will be awarded for identifying the key points. (Unless otherwise specified, all questions and answers are based on hydrogenation units.) ) Paraffin forms larger crystals that are plate-shaped; its main components are n-alkanes. Petrolatum, on the other hand, has fine crystals, with cyclic hydrocarbons being its primary components. Scoring criteria: 2 Wealth points for incorrect attempts; 3–8 points for *incomplete* answers. 10 Wealth points for correct answers, provided with detailed explanations; 15–20 Wealth points for correct answers with additional *insufficient* details. Please score according to these criteria. Note: If there are editing records after answering, only points will be awarded to those who participated. For continuous malicious spamming, 2 points will be deducted each time, with no upper limit. Pure numbers, pure emojis, or random letters that have nothing to do with the answer are all considered malicious spamming; points will start to be deducted after three warnings. 2017 Q&A Summary Thread (updates have started) http://bbs.hcbbs.com/thread-1657793-1-1.html 2017 Daily Question Summary Thread (updates have started) http://bbs.hcbbs.com/thread-1657794-1-1.html 2016 Q&A Summary Thread (updates completed) http://bbs.hcbbs.com/thread-1597792-1-1.html
Paraffin forms larger crystals that are plate-shaped; its main components are n-alkanes. Petrolatum, on the other hand, has fine crystals, with cyclic hydrocarbons being its primary components.
Paraffin is generally composed mainly of normal alkanes and isoparaffins with relatively low molecular weights, having a carbon atom count typically between 22 and 36; it is obtained through the refining of wax paste removed from the vacuum side stream feedstock. Paraffin wax is generally produced by dewaxing residual lubricating oil feedstocks; it has a higher molecular weight and a higher aromatic content compared to paraffin wax.
In terms of appearance: paraffin is white, while paraffin wax is slightly yellow. 2. In terms of texture: paraffin feels flaky when squeezed, while paraffin wax feels sticky when squeezed. 3. In terms of melting point: the melting point of paraffin is 52–62°. The melting point of paraffin wax is 70–80°.
Paraffin is a hydrocarbon mixture extracted from certain distillates of petroleum, shale oil, or other bituminous mineral oils, with solid alkanes being its main components. The main components of paraffin wax are cycloalkanes and isoparaffins with long side chains of C25 or higher, along with small amounts of straight-chain alkanes and aromatics. Paraffin is mainly used to manufacture matches, fiberboard, canvas, and other products. Paraffin wax is primarily used as a base ingredient in cold creams and other cosmetics, as well as as a curing agent in hair waxes, lipsticks, and other cosmetic products. Can be used as a raw material for vaseline, lubricants, candles, wax paper, etc ； It is also used for insulation, heat insulation, water resistance, industrial coatings, as well as in medical and cosmetic applications.
1. Different composition: Paraffin is a hydrocarbon mixture extracted from certain distillates of petroleum, shale oil, or other bituminous mineral oils, with solid alkanes being its main components. Its main components are cycloalkanes and isoparaffins with long side chains of C25 or higher, along with small amounts of straight-chain alkanes and aromatics. 2. Different uses: Paraffin is mainly used in the production of matches, fiberboard, canvas, etc. Paraffin wax is primarily used as a base ingredient in cold creams and other cosmetics, as well as as a curing agent in hair waxes, lipsticks, and other cosmetic products. Can be used as a raw material for vaseline, lubricants, candles, wax paper, etc ； It is also used for insulation, heat insulation, water resistance, industrial coatings, as well as in medical and cosmetic applications.
Paraffin is a plate-like crystal with a molecular weight of 300–500 and 20–35 carbon atoms; it comes from high-boiling fractions. Petrolatum is a small-flake crystal with a molecular weight of 500–900 and 35–60 carbon atoms; it originates from heavy lubricating oil fractions and residue
Waxes in petroleum are generally divided into paraffin waxes and ozokerite waxes. Paraffin waxes are mainly composed of n-alkanes and isoparaffins with relatively low molecular weights, having a carbon atom count typically between 22 and 36; they are obtained through the refining of wax distillates extracted from vacuum side-stream materials. Paraffin wax is generally produced by dewaxing residual lubricating oil raw materials; it has a higher molecular weight and a higher aromatic content compared to paraffin wax.
1. Different composition: Paraffin is a hydrocarbon mixture extracted from certain distillates of petroleum, shale oil, or other bituminous mineral oils, with solid alkanes being its main components. Its main components are cycloalkanes and isoparaffins with long side chains of C25 or higher, along with small amounts of straight-chain alkanes and aromatics. 2. Different uses: Paraffin is mainly used in the production of matches, fiberboard, canvas, etc. Paraffin wax is primarily used as a base ingredient in cold creams and other cosmetics, as well as as a curing agent in hair waxes, lipsticks, and other cosmetic products. Can be used as a raw material for vaseline, lubricants, candles, wax paper, etc ； It is also used for insulation, heat insulation, water resistance, industrial coatings, as well as in medical and cosmetic applications.
1. Different composition: Paraffin is a hydrocarbon mixture extracted from certain distillates of petroleum, shale oil, or other bituminous mineral oils, with solid alkanes being its main components. Its main components are cycloalkanes and isoparaffins with long side chains of C25 or higher, along with small amounts of straight-chain alkanes and aromatics. 2. Different uses: Paraffin is mainly used in the production of matches, fiberboard, canvas, etc. Paraffin wax is primarily used as a base ingredient in cold creams and other cosmetics, as well as as a curing agent in hair waxes, lipsticks, and other cosmetic products. Can be used as a raw material for vaseline, lubricants, candles, wax paper, etc ； It is also used for insulation, heat insulation, water resistance, industrial coatings, as well as in medical and cosmetic applications.
Paraffin oil, also known as mineral oil, is a colorless and odorless mixture obtained through the distillation of crude oil. It can be divided into light mineral oil and ordinary mineral oil, with light mineral oil having a lower specific gravity and viscosity. Due to its low allergenicity and good occlusive properties, which help prevent the evaporation of moisture from the skin, mineral oil is often used as a smoothing and moisturizing ingredient in skincare products such as baby oil, lotions, and creams. Furthermore, due to its good oil solubility, it is also used in makeup removers or cleansing milks for removing makeup. It is reported that mineral oils with poor purification and high levels of impurities have certain carcinogenic properties