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Manufacturing
Manufacturing is the use of tools, machines and labor to produce goods for sale or use. It may refer to various human activities ranging from handicraft to high tech, but is most commonly applied to industrial production where raw materials are transformed into finished goods.
8,256 Questions
How do you manufacture formaline?
Formalin (which is what I suppose you are asking about) is another name for formaldahyde.
Formaldehyde is produced industrially by the catalytic oxidation of methanol.
See the "Sources and related links below"
How do you make acrylic plastic made?
There are many ways to shape plastic. A small oven and colored quarter inch plastic will allow you to make ashtrays and the like by using wooden jigs.
You can actually use a plastic liquid to pour into molds.
Shops heat up the plastic sheets in ovens and use forms and vacuum to suck the plastic to the form. This same method is used to make some packaging for products.
When your wool socks are sticking to a silk shirt what is the electric charge on the socks?
The wool socks likely have a negative charge, as they are pulling the silk shirt (which may have a positive charge) towards them due to electrostatic attraction.
Rubber bands dry out due to the loss of moisture in their material over time. Exposure to sunlight, air, and heat can cause the rubber in the bands to become stiff and brittle, leading to dryness and potential breakage.
What is Made from melting plates?
Melting plates can be used to create a variety of objects, such as sculptures, art pieces, or recycled metal materials for industrial purposes. The molten metal can be poured into molds to create different shapes and forms based on the desired end product.
Why are steel files generally harder than common metal objects?
Steel files are generally harder than common metal objects because they are made of high-carbon steel, which undergoes a heat treatment process to increase its hardness. This process involves heating the steel to high temperatures and then rapidly cooling it, making the file resistant to wear and able to maintain a sharp cutting edge.
Nylon is made from a condensation reaction between a diamine (nylon) and a diacid to form an amide bond. This type of bond is called a polyamide bond and is responsible for linking the repeating units in nylon polymers.
What does Electronic metal discharge mean?
"Electronic metal discharge" typically refers to the phenomenon of metal parts discharging electrical energy when they come into contact with each other. This can occur when metal components with different electrical charges or potentials make contact, leading to a spark or discharge of electricity. It is important to prevent such discharges in electronic devices to avoid damage.
What is blister packaging made from?
Blister packaging is typically made from materials like PVC (polyvinyl chloride), PET (polyethylene terephthalate), or other types of plastic. The plastic is molded into the desired shape to create the cavity that holds the product, and then sealed with a backing material like foil or paperboard.
What are Duties of a control chemist in a cosmetic manufacturing company?
A control chemist in a cosmetic manufacturing company is responsible for performing quality control tests on raw materials and finished products to ensure they meet regulatory standards and company specifications. They also investigate and resolve any quality issues that arise during production, and may be involved in developing new testing methods or improving existing processes. Additionally, they play a key role in maintaining accurate records and documentation of testing results for compliance and traceability purposes.
How do you clean your room fastest?
To clean your room fastest, start by decluttering and putting items away in their designated places. Then, focus on high-impact areas such as making the bed, dusting surfaces, and vacuuming the floor. Finally, finish by organizing any remaining items and doing a quick spot clean as needed.
What is the fullform of DCDA process for manufacturing of sulfuricacid?
The full form of DCDA process is Double Contact Double Absorption process for the manufacturing of sulfuric acid. In this process, the sulfur dioxide gas is reacted with air to form sulfur trioxide, which is then absorbed in water to produce sulfuric acid. The double contact and double absorption steps enhance the overall efficiency of the sulfuric acid production.
Is cotton a natural or manufactured material?
natural
Cotton comes from plants that first flower and then form into bolls that contain the raw cotton. About this time of year the plant is killed and the bolls open. When this happens a machine called a cotton picker comes through the field and takes the raw cotton off the plant. Usually it takes about 4 times to get all of the cotton. In the first weeks of Nov. the cotton plant is plowed under to prevent the boll worm of establishing a hold. The raw cotton is taken to a gin where it is baled and then sold.
no, crop
Suitable polymer and the likely manufacturing process for rainwater gutters and drainpipes?
Suggest a suitable polymer and the likely manufacturing process for each of the following and give reasons for your choice:
rainwater gutters and drainpipes,
a domestic vacuum cleaner body,
a 13 A electrical socket,
a domestic washing-up bowl, and
lenses for vehicle rear lights.
Mucus is an example of a product manufactured by?
Mucus is an example of a product manufactured by goblet cells in the respiratory and digestive systems. These cells produce mucus to help protect and lubricate the lining of these systems.
Rubber bands are made of elastic material that can stretch and return to its original shape. When a rubber band is stretched, it stores potential energy. This energy is released when the stretching force is removed, causing the rubber band to contract back to its original size.
Where does the stuff the tree is made of come from?
About half the body weight of a tree is carbon. The tree absorbs carbon dioxide from the atmosphere, stores the carbon, and releases the oxygen. As the tree grows, it stores more and more carbon.
What unit operations are used in dye manufacturing?
All synthetic organic dyes and pigments contain a ring structure of atoms. The same formation is present in dye intermediates. It is usual also for the dye intermediate to have one or more of the groups of atoms that react chemically to form salts.
A simple example of an intermediate is -naphthol, which is obtained from naphthalene by heating it with 96 percent sulfuric acid at 160 C (320 F), adding sodium sulfate, and volatizing the remaining naphthalene with steam. Sodium naphthalene-2-sulfonate, left behind after this steam treatment, is then fused with caustic soda to yield -naphthol. The -naphthol is separated from the mixture by diluting it with water and treating it with sulfuric acid. These reactions, known respectively as sulfonation and alkali fusion, are given the name unit processes.
A number of such unit processes are available to the chemical manufacturers, and by means of various permutations, it is possible to synthesize the several hundred intermediates needed for the manufacture of the modern range of colorants.
Nitration.In nitration, a nitro group is substituted for a hydrogen atom in an aromatic hydrocarbon molecule by the action of nitric acid. Benzene yields nitrobenzene by reaction with a mixture of nitric and sulfuric acids at a temperature not exceeding 50 C (122 F). Toluene, with mixed acid at 30-35 C (86-95 F), yields orthonitrotoluene, metanitrotoluene, and paranitrotoluene. Technical quality nitrotoluenes are obtained from the crude nitration product by physical separation methods including fractional distillation; 1-nitronaphthalene is obtained when naphthalene is nitrated.Nitration is a strongly exothermic, or heat-releasing, reaction; in large-scale nitrations the temperature must be maintained between established limits and efficient means of cooling provided. Cast-iron, mild steel, or stainless-steel vessels are used, arranged to permit agitating the mixture. The addition of nitric acid is carefully controlled by instruments that detect incipient rises in temperature. Other safeguards stop the addition in case the stirring mechanism is halted by a power or mechanical failure.
Reduction.Amines, chemical compounds formed by substituting organic radicals for the hydrogen atoms of ammonia, may be obtained from nitro compounds by reduction; that is, replacement of oxygen by hydrogen. This is accomplished by mixing the nitro compound with iron borings and a minimum quantity of aqueous hydrochloric acid in a cast-iron reducer with a powerful agitator. The end products are aniline, or other amines, and ferric oxide. The aniline, which separates as an upper layer above the aqueous suspension of iron and oxide, is removed mechanically and purified by steam distillation followed by fractionation. Analogous processes are employed in making other amines from their corresponding nitro compounds. Halogenation.Halogenation is the introduction, by direct or indirect means, of a halogen (fluorine, chlorine, or bromine) into molecules of dye intermediates. In many cases direct substitution can be effected using elemental chlorine or bromine with or without a catalyst. In other cases a diazotized amine is treated with cuprous chloride or bromide. Indirect means must be employed for introducing fluorine. Hydrogen fluoride (HF), for example, is used to displace chlorine in chloro compounds. Amination.The amination, or conversion of chloro compounds to amines, can be accomplished by ammonolysis, a process that involves heating the chloro compound with aqueous ammonia in a steel autoclave (equipment for working at pressures above atmospheric). Chloronitrobenzene, for example, is transformed into nitroaniline by this process. Several industrial amination processes exist. In the Dow Process monochlorobenzene is converted into aniline by heating it with aqueous ammonia at 240 C (464 F) in the presence of a copper oxide catalyst. In the Halcon Process phenol undergoes ammonolysis to yield aniline. Hydroxylation.Hydroxylation is the introduction of a hydroxyl, or OH, group into the dye-intermediate molecule. Among the methods used for this are fusion by sodium hydroxide, Bucherer reaction (conversion of aromatic amines into phenolic compounds by aqueous sulfite or bisulfite), hydrolysis of chloro compounds under various reaction conditions according to the reactivity of the chloro compound, decomposition of diazonium salts by hot aqueous sulfuric acid, hydrolysis of sulfo groups, and oxidation (described below); for example, the compound cumene yields phenol and acetone. Oxidation.Oxidation, the combination of a substance with oxygen, or, generally, any reaction in which an atom loses electrons, is a ubiquitous chemical reaction in dye chemistry; only a few examples can be given here. The conversion of methyl groups into carboxylic acids, and more especially into styryl compounds, is effected by various oxidants such as sodium hypochlorite, potassium permanganate, and sodium dichromate. The catalyzed oxidation of naphthalene with air leads to phthalic anhydride. Other important reactions include oxidation of leuco compounds to dyes and the formation of complex polycyclic substances from simpler molecules. Benzidine rearrangement.The benzidine rearrangement consists of the conversion of nitrobenzene and its derivatives into derivatives of biphenyl in a two-stage process. The first stage consists of alkaline reduction with zinc dust to the hydrazobenzene; and the second of treatment with hydrochloric acid.The above and other unit processes are used in various combinations in order to produce the important intermediate chemicals that are, in turn, used to manufacture the dyes themselves.
H Acid.H Acid, which is 1-amino-8-hydroxynaphthalene-3,6-disulfonic acid, an important dye intermediate, is produced from naphthalene by a combination of the unit processes of sulfonation, nitration, reduction, and hydrolysis. H Acid is used in the manufacture of a large number of azo dyes. Diaminostilbene disulfonic acid.4,4'-diaminostilbene-2,2'-disulfonic acid is produced from p-nitrotoluene by a combination of the unit processes of sulfonation, oxidation, and reduction. This product is used in large quantities for manufacture of fluorescent brightening agents.What happens to the flame size when the gas control valve is turned?
When the gas control valve is turned, adjusting it will regulate the flow of gas to the burner. By opening the valve more, the flame size will increase as more gas is released. Conversely, by closing the valve, the flame size will decrease as less gas is able to reach the burner.
3.52 metric tons is how many lbs?
A metric ton is 0.907185 of a ton. That gives you 3.88 tons.That converts to 7,760 pounds.
Nylon is a polyamide, a kind of a synthetic polymer, so it is definitely artificial, man made.
Which acid is used in manufacturing of dynamite?
A concentrated sulfuric acid and a concentrated nitric acid are both used in production of a nitroglycerine, which is an active ingredient of a dynamite.
What is the material used for manufacture carbon wicks for mosquito repellent vaporizer?
Carbon wicks for mosquito repellent vaporizers are typically made from natural bamboo or other plant-based fibers that have been carbonized. This process helps the wicks burn steadily and evenly, providing a consistent release of the repellent ingredients.
How do product manufacturers know exactly when the expiry date of a product is?
Product manufacturers determine the expiry date through stability testing, where the product is tested under various conditions to observe its deterioration over time. Factors such as temperature, light exposure, and packaging are considered to establish the expiry date that ensures product quality and safety.
