Solid paraffin

In industrial applications, it is often useful to modify the crystal properties of the paraffin wax, typically by adding branching to the existing carbon backbone chain. The modification is usually done with additives, such as EVA copolymers, microcrystalline wax, or forms of polyethylene. The branched properties result in a modified paraffin with a higher viscosity, smaller crystalline structure, and modified functional properties. Pure paraffin wax is rarely used for carving original models for casting metal and other materials in the lost wax process, as it is relatively brittle at room temperature and presents the risks of chipping and breakage when worked. Soft and pliable waxes, like beeswax, may be preferred for such sculpture, but “investment casting waxes,” often paraffin-based, are expressly formulated for the purpose.

In a histology or pathology laboratory, paraffin wax is used to impregnate tissue prior to sectioning thin samples of tissue. Water is removed from the tissue through ascending strengths of alcohol (75% to absolute) and the tissue is cleared in an organic solvent such as xylene. The tissue is then placed in paraffin wax for a number of hours and then set in a mold with wax to cool and solidify; sections are then cut on a microtome.

Other uses

• Candle-making
• Wax carving
• Bicycle chain lubrication
• Coatings for waxed paper or cloth
• Food-grade paraffin wax:
  • Shiny coating used in candy-making; although edible, it is nondigestible, passing through the body without being broken down
  • Coating for many kinds of hard cheese, like Edam cheese
  • Sealant for jars, cans, and bottles
  • Chewing gum additive
• Investment casting
• Anti-caking agent, moisture repellent, and dustbinding coatings for fertilizers
• Agent for preparation of specimens for histology
• Bullet lubricant – with other ingredients, such as olive oil and beeswax
• Phlegmatizing agent, commonly used to stabilise/desensitize high explosives such as RDX
• Crayons
• Solid propellant for hybrid rocket motors
• Component of surfwax, used for grip on surfboards in surfing
• Component of glide wax, used on skis and snowboards
• Friction-reducer, for use on handrails and cement ledges, commonly used in skateboarding
• Ink. Used as the basis for solid ink different color blocks of wax for thermal printers. The wax is melted and then sprayed on the paper producing images with a shiny surface
• Microwax: food additive, a glazing agent with E number E905
• Forensic investigations: the nitrate test uses paraffin wax to detect nitrates and nitrites on the hand of a shooting suspect
• Antiozonant agents: blends of paraffin and micro waxes are used in rubber compounds to prevent cracking of the rubber; the admixture of wax migrates to the surface of the product and forms a protective layer. The layer can also act as a release agent, helping the product separate from its mould.
• Mechanical thermostats and actuators, as an expansion medium for activating such devices
• “Potting” guitar pickups, which reduces microphonic feedback caused from the subtle movements of the pole pieces
• “Potting” of local oscillator coils to prevent microphonic frequency modulation in low end FM radios.
• Impregnating compound to prevent moisture ingress into wound components such as transformers, as an alternative to varnish; usually the transformer is totally immersed in wax and inside a steel can.
• Textile manufacturing processes, such as that used for Eisengarn thread.
• Wax baths for beauty and therapy purposes
• Thickening agent in many paintballs
• Moisturiser in toiletries and cosmetics such as Vaseline.
• Prevents oxidation on the surface of polished steel and iron^[26]
• Phase change material for thermal energy storage
  • MESSENGER (Mercury spacecraft) When the spacecraft was unable to radiate excessive heat.
• Manufacture of boiled leather armor and books
• Skateboard wax
• Paraffin microactuator
• Neutron radiation shielding
• Waterproofing agent for waxed cotton garments and commercially important in the early water proofing of ship sails.
• In Occupational and Physical therapies paraffin wax baths are used to warm and loosen connective tissue. They are mainly used in hand therapy.
• Used as the main additive in Log Sealers
• Liquid Paraffin is used in Fire-breathing.

Paraffin wax (or petroleum wax) is a soft colorless solid derived from petroleum, coal or shale oil that consists of a mixture of hydrocarbon molecules containing between twenty and forty carbon atoms. It is solid at room temperature and begins to melt above approximately 37 °C (99 °F), and its boiling point is above 370 °C (698 °F). Common applications for paraffin wax include lubrication, electrical insulation, and candles;  dyed paraffin wax can be made into crayons. It is distinct from kerosene and other petroleum products that are sometimes called paraffin.