How To Identify Beeswax

Identification method

Identification of beeswax In the daily identification of the quality of beeswax, the quality of beeswax is mostly based on intuitive experience or simple detection methods to identify the quality of beeswax. The best way is to carry out laboratory tests according to the industry standards of beeswax to detect its physical and chemical indicators and other related indicators.

1. Sensory identification method

(1) Eye view: Observe the color, state, and impurities of beeswax through eyes to judge the quality of beeswax. The color of beeswax varies greatly depending on the nectar source flower species, the newness of the comb, the extraction method, and the storage time. Pure beeswax is bright in color and dull. Usually beeswax is mostly light yellow, medium yellow or dark brown. The color of beeswax that is placed every other year or for many years is dark; the color of premium beeswax is the same up and down. Beeswax containing foreign matter is shiny and transparent. Generally, ceresin wax is dim in color, paraffin wax is bright in color, and starch is opaque. [5] The surface of the pure beeswax block is generally convex, corrugated, with a compact cross-sectional structure, fine crystal particles, and matt. Containing foreign matter such as ozokerite, paraffin wax and other beeswax blocks, the surface is concave, smooth, without ripples, the cross-sectional structure is loose, the crystal particles are coarse, shiny, twill or white granular. The beeswax block mixed with lacquer wax has a thinner section than beeswax, and the color is darker. [5] Pure beeswax has no obvious physical impurities such as dead bees, sawdust, grass stalks, gravel dust, etc.

(2) Hearing: Use a hammer to hit or throw beeswax from the air onto a hard ground. The sound of pure beeswax is dull (dumb), like throwing bricks on the ground; adulterated wax containing paraffin wax is crisp The sound is like a tile hitting the concrete floor.

(3) Sniffing the nose: Break the block of beeswax, and smell the section of the beeswax with your nose. Pure beeswax has a beeswax aroma of pollen and nectar. Beeswax containing paraffin wax has peculiar smell or tasteless. For example, wax containing rosin has a strong pine fragrance, stearic acid or animal and vegetable fats have a strong stench or fishy smell, and soap wax has a soapy smell.

(4) Tooth bite: Take a small piece of wax and put it in your mouth and chew with your teeth. Pure beeswax is not easy to bite, loose, and not stick to your teeth, and can be bitten into transparent thin slices that are not perforated; those containing paraffin, rosin, etc. Beeswax is easy to break when biting, and spreads as you chew, easy to stick to teeth, and easy to perforate when biting thin slices.

(5) Push and pinch: Push the surface of the wax with the belly of the thumb, pure beeswax is astringent; the surface of beeswax containing foreign matter is smooth or sticky, greasy, and soft. Use your fingernails to gently push the surface of the wax forward. Pure beeswax won't be able to scrape, and it won't cause wax flowers; beeswax with paraffin wax is easy to push and scrape wax flowers. Put your nails into the wax block. Pure beeswax sticks to the nails. When the nails are moved back, there will be a feeling of beeswax gripping the nails, and the wax surface does not show white marks; the beeswax containing paraffin wax does not stick to the nails and is slippery, and the wax surface appears after the nails are withdrawn A white seal.

(6) Twisting: Soften small pieces of beeswax with finger temperature or fire temperature. Twist the pure beeswax into thin strips, which are easy to break when pulled, and the ends are neatly broken. The two sections of wax are overlapped, easy to twist together, and good fusion ; Paraffin-containing beeswax stretches when pulled, the ends are broken and pointed, the two sections overlap and twist can not be together, the heavy skin is layered, and the fusion is not good.

2. Simple inspection method

Any abnormality of beeswax found through sensory identification, it is difficult to determine the authenticity of the quality of beeswax for a while, and the following simple tests can be used to judge.

(1) Foreign matter inspection: directly burn the wax block with fire, drop the wax beads melted by pure beeswax on the straw paper, the beads are thin, not soaked in the straw paper, and have no impurities; the wax beads drop into the water to form a uniform sheet. Transparent, not easily broken by hand. The beeswax block mixed with paraffin wax is directly burned with fire, and the melted wax beads drop on the straw paper and form a pile; the soaked paper mixed with animal and vegetable fats; the wax beads mixed with starch form a pile with debris; the wax beads drop into the water It solidifies into a block, with thin sides and thick middle, fragile by hand twist.

(2) Stearic acid test: After melting 1 gram of wax block for a few minutes, add 80% alcohol, cool and filter, and mix the filtrate with the same amount of water. The solution is clear and transparent and pure beeswax; the solution is slightly present Milky white, opaque, and visible wax surface condensed stearic acid, which proves that beeswax contains stearic acid.

(3) Purity inspection: Take a small piece of wax and stick it on the glass bulb of the thermometer, put it into a beaker with water and heat it slowly. Keep the waxed part of the thermometer away from the bottom of the cup. When it is heated until the wax ball starts to separate from the bulb of the thermometer and the temperature starts to rise, write down the temperature displayed on the thermometer. This temperature is the melting point of the wax sample being tested. The melting point of pure beeswax is between 62-67℃. If the melting temperature of the wax sample does not match the melting point of pure beeswax, less than 62% or more than 67℃, it proves that the wax is impure, and it must contain paraffin, ozokerite and other foreign substances.

(4) Test with paraffin wax: Put 1 gram of wax sample into a test tube, add saturated potassium hydroxide solution and boil it for 3-5 minutes, and then keep it in a water bath for about 30 minutes. The temperature is controlled at 75°C without wax liquid solidification. If the wax liquid is clear and transparent, it is pure beeswax; if there are fat globules floating on the wax liquid, it proves that the wax sample contains paraffin wax. The larger the fat globule, the more paraffin wax. The decapitation is pointed.