paraffin

[par´ah-fin]

1. a purified mixture of solid hydrocarbons from petroleum, used for embedding histological specimens and as a stiffening agent in pharmaceutical preparations.

2. alkane.

liquid paraffin see mineral oil.

par·af·fin

(par'ă-fin),

1. One of the methane series of acyclic hydrocarbons.

2. Synonym(s): hard paraffin

[L. parum, little, + affinis, neighboring, akin, so called because of its slight tendency to chemical reaction]

Farlex Partner Medical Dictionary © Farlex 2012

alkane

Any of a number of saturated aliphatic (straight-chain) hydrocarbons of the methane series (methane, ethane, propane, butane, pentane, hexane, septane, octane, nonane, decane, etc.), in which the carbons are joined to other carbons by single bonds.

hard par·af·fin

(hahrd pară-fin)

Purified mixture of solid hydrocarbons derived from petroleum.
Synonym(s): paraffin (2) .

Medical Dictionary for the Dental Professions © Farlex 2012

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References in periodicals archive

Petroleum waxes function by migrating through the rubber to the surface of the vulcanizate, and there form an inert, thin, non-crystalline, adherent and flexible film, which acts as a barrier to ozone gas and prevents the reaction mentioned above from taking place.

Detailed knowledge of the composition of petroleum waxes, and this influence of temperature on their activity, allow rubber waxes to be blended from suitable petroleum raw materials to give products offering maximum protection over a wide temperature range and with optimum cost-effectiveness.

The role of petroleum waxes in the protection of rubber

*For Rigid PVC - Calcium Stearate FP, Calcium Stearate F, Calcium Stearate-Extra Dense, Magnesium Stearate D, and Sodium Stearate T-1 are internal lubricants; Sunolite 160 is a refind petroleum wax used as an external lubricant.

Lubricants and processing aids: product lines reviewed

* Loobwax 0605--Synthetic hydrocarbon and petroleum waxes for higher shear application.

Lubricants: product lines reviewed

Calumet Penreco offers a full line of naphthenic and paraffinic oils, petroleum waxes, petrolatum, hydrocarbon gels and FDA/USP white mineral oils, including well-respected quality brands such as DrakeoI[R], Versagel[R] and Synergel[R].

Penreco[R]

Petroleum waxes are generally classified into three principal types: paraffin, micro-crystalline and petrolatum.

Processing additives - A to Z

In some of the studies cited in this article, petrolatum per se was not listed as a test material, but the components, mineral oils and petroleum waxes, were tested and therefore the studies are valid for petrolatum as well.

Truly natural: in the past decades, extensive research has been conducted measure the safety and effectiveness of mineral oil and petrolatum. A researcher from Calumet provides a detailed look at the data

Jowett, The protection of rubber by petroleum waxes, Elastomerics, Vol.

Review of antiozonants

Calumet's offers a full line of naphthenic and paraffinic oils, petroleum waxes, petrolatum, hydrocarbon gels and FDA/USP white mineral oils, including well-respected quality brands such as Drakeol[R], Versagel[R] and Synergel[R].

Calumet Specialty Products Partners, L.P

A recent presentation at the National Candle Association technical meeting highlighted the fact that in a poorly-designed candle system, vegetable waxes have an equal propensity to soot as petroleum waxes. In addition, petroleum waxes are biodegradable and non-toxic.

Petroleum-based Candles can burn beautifully

Vegetable and petroleum waxes, calcium and zinc stenrates, and silicone fluids.

Lubricants and processing aids. (Product Lines Reviewed)

Vegetable and petroleum waxes, calcium and zinc stearates, and silicone fluids are available under the Akrochem name.

Lubricants and processing aids