white wax, Bees wax, Beeswax, Wax,bees, Chinese (insect) wax, 8012-89-3

white wax, Bees wax, Beeswax, Wax,bees, Chinese (insect) wax, 8012-89-3

white wax

CAS: 8012-89-3

Molecular Formula:

Names and Identifiers

 Physico-chemical Properties

Risk and Safety

Upstream Downstream Industry

Nature

is the substance secreted by the male of the white wax worm, with white wax alcohol and white wax alcohol ester as the main components. White or pale yellow solid. Gloss, relative density of 0. 95-970, melting point of 80~85 ℃. Insoluble in water, ethanol and ether, soluble in benzene, chloroform and other organic solvents.

Preparation Method

harvesting wax flowers and processing of white wax is the most important part of the preparation of white wax. The natural white wax picked from the wax tree is called wax flower. The Wax flower contains white wax worms and their secretions, and must be processed to obtain head wax, two wax, three wax, etc, then deep processing to obtain goods
White wax. White wax processing methods are natural boiling wax and steam processing in two ways.

1. natural wax boiling method.
2. steam processing method.

white wax in the finished form of rice wax and horse wax two kinds. Respectively, the head of the wax, two wax, three wax in proportion to the boiling. The proportion of rice wax is 40~6 ~ 55%, the second wax 45% ~ ss%, blue wax 5%. Can not be refined into rice heart wax raw materials can be boiled into horse tooth wax, which aged wax, three wax ratio is higher.

Standart

This line was refined from beeswax (wax from the secretions of bees) by oxidative bleaching. Due to the different types of bees, beeswax secreted by the Chinese Bee, commonly known as Beeswax (acid value of 5.0 to 8 .0 ), by the Western bee species (mainly refers to the Bee) secretion of beeswax commonly known as the West bee wax (acid value of 16. 0 to 23. 0).

- Trait

• This product is white or light yellow solid, no gloss, no crystal; Tasteless, with specific odor.
• This product is soluble in dichloromethane, slightly soluble in acetic acid, and almost insoluble in water or anhydrous ethanol.

relative density

take this product to prepare pieces of 1cm in length, width and height, put them in a 500ml measuring cup, and add about 400ml(20°C) of ethanol solution (1-3), if the wax block sinks, human distilled water can be added; If the wax block is floating, ethanol can be added, and the wax block can be stopped at any point in the solution to obtain the relative density test liquid. The test solution was taken and photographed for determination by densitometry (General 0601). The relative density of this product is 0.954~964.

melting point

The melting point of this product (General rule 0612 second method) is 62~6 7 1. The refractive index of this product (General 0622) at 75C is 1. 4410~1.4430.

acid value

The acid value of this product (General rule 0713) is 5. 0~8. 0 (medium beeswax) or 16 .0~23.0 (West beeswax).

saponification value

The saponification value of this product (General 0713) is 85~100.

iodine value

The iodine value of this product (General 0713) is 8 .0~13.0.

Use

white wax is an important raw material for military industry, light industry, chemical industry and pharmaceutical production. Mainly used for metal anti-corrosion polishing, textile light and paper, furniture, flooring, Automotive Glazing.

Exam

wax, paraffin and other waxes

take 3.0g of this product, put it in a 100ml stopcock round/| Flask, add 30ml of 4% potassium hydroxide ethanol solution, heat and reflux for 2 hours, remove it, insert a thermometer, immediately place the flask in hot water at 80°C. Continuously rotate the flask during the decrease of the water temperature, and observe the solution in the flask
When the temperature of the solution drops to 65°C, no large amount of turbidity or droplets should occur.

Fat, Fatty oil, Japanese wax and rosin

take this product l .O g, in a 100ml flask, add 3. 5M o l/L sodium hydroxide solution 35ml, heated to reflux for 30 minutes, taken out, let cool until the wax layer, the solution should be clear or translucent; Take the above solution to filter, the filtrate is acidified with hydrochloric acid, the solution should be clear and no significant turbidity or precipitation should occur.

glycerol and other polyols

take 0.20g of this product, add potassium hydroxide ethanol solution (take 3 g of potassium hydroxide, add water 5m l to dissolve, add ethanol to 100ml, shake, then get 1 0 m l), after heating and refluxing for 30 minutes, take it out, add 50 ml of dilute sulfuric acid, cool it, filter it, wash the container and residue with dilute sulfuric acid, combine the wash solution and filtrate, and put it in the same 100ml measuring flask, dilute sulfuric acid was added and diluted to the scale, and the solution was used as the test solution. Take two 10ml Nessler's colorimetric tubes, add test solution lm l to the nail tube, add 0.5ml of 0.05m ol/L Sodium periodate solution, mix
After 5 minutes, add the magenta sulfurous acid solution 1 .0 m l, mix well, no precipitation; Then place the test tube in warm water at 40°C, continuously rotate the test tube during the decrease of water temperature, and observe for 10-15 minutes; 0.001% glycerol dilute sulfuric acid solution lm l shall be added into tube B precisely and operated according to law at the same time as tube a. The color in tube A shall not be deeper than that in tube B (calculated by glycerol), no. 5%).

Heavy metals

take this product l .O g, inspection according to law (General Principles 0821 second law), containing heavy metals shall not exceed 20 parts per million.

arsenic salt

take this product l .O g, put it in a Kjeldahl Flask, add 5ml of sulfuric acid, heat it with small fire until complete carbonization (sulfuric acid can be added if necessary, the total amount is not more than 10ml), carefully add concentrated hydrogen peroxide solution dropwise, until the reaction stops, continue heating, add concentrated hydrogen peroxide solution Dropwise until the solution is colorless, let it cool, add 10m l of water, and evaporate until thick smoke occurs to remove hydrogen peroxide, add hydrochloric acid 5M l and an appropriate amount of water, according to the law inspection (General Principles 0822 The first law), should comply with the provisions (not through 0. 0002%).

Category

pharmaceutical excipients, ointment base and release blockers.

Storage

protected from light and sealed.