Hippuric acid crystals are rare. They may be either yellow-brown or clear, and they often resemble needle-like prisms or plates. Hippuric acid crystals are often found clustered together. While they are sometimes caused by an acidic urine pH, hippuric acid crystals can also occur in healthy urine.

Ethylene glycol is an organic compound primarily used as a raw material in the manufacture of polyester fibers and fabric industry, and polyethylene terephthalate resins used in bottling.

Giemsa's solution is a mixture of methylene blue, eosin, and Azure B. The stain is usually prepared from commercially available Giemsa powder.  A thin film of the specimen on a microscope slide is fixed in  pure methanol for 30 seconds, by immersing it or by putting a few drops of methanol on the slide.

Guar seed endosperm is a source of water soluble gum which is used as stabilizer, emulsifier and thickener in various food products and contributes to soluble dietary fiber (SDF) portion of seed total dietary fiber

Guar gum is used as a laxative. It is also used for treating diarrhea, irritable bowel syndrome (IBS), obesity, and diabetes; for reducing cholesterol; and for preventing “hardening of the arteries” (atherosclerosis). In foods and beverages, guar gum is used as a thickening, stabilizing, suspending, and binding agent.

Benzethonium chloride, also known as hyamine is a synthetic quaternary ammonium salt. This compound is an odorless white solid, soluble in water.Benzethonium chloride is also used in the food industry as a hard surface disinfectant.

Image result for hyamine 1622 solution 0.004m wikipedia

Benzethonium chloride, also known as hyamine is a synthetic quaternary ammonium salt. This compound is an odorless white solid, soluble in water.Benzethonium chloride is also used in the food industry as a hard surface disinfectant.

Common Uses for Hexane AR

.Extracting edible oils from seeds and vegetables.

.As an additive in consumer products including gasoline, glue, varnishes and inks.

.As a cleaning agent in the textile, furniture and printing industries.

.As a special glue used in roofing, shoemaking and leather products.

Common Uses for Hexane

.Extracting edible oils from seeds and vegetables.

.As an additive in consumer products including gasoline, glue, varnishes and inks.

.As a cleaning agent in the textile, furniture and printing industries.

Glutaraldehyde is used as a cold sterilant to disinfect and clean heat-sensitive equipment such as dialysis instruments, 

surgical instruments, suction bottles, bronchoscopes, endoscopes, and ear, nose, and throat instruments.

Hydrogen fluoride is used to make refrigerants, herbicides, pharmaceuticals, high-octane gasoline, aluminum, plastics, electrical components, and fluorescent light bulbs. Sixty percent of the hydrogen fluoride used in manufacturing is for processes to make refrigerants.

Hydrazine sulfate is a chemical that has been studied as a treatment for cancer and as a treatment for the body wasting (i.e.cachexia) associated with this disease. It has been claimed that hydrazine sulfate limits the ability of tumors to obtain glucose, which is a type of sugar used by cells to create energy.

Hydrofluoric acid is a corrosive that is commonly used in industrial applications. It is used as a cleaning agent in the petroleum industry, in the production of high-octane fuel, glass etching, germicides, dyes, tanning, and fireproofing material, as well as in rust removal.

Hydrofluoric acid, hydrogen fluoride in water, has many uses in research laboratories. HF can be used to etch silicon for semiconductor work and can also be used to dissolve rock samples.

Hydroquinone, also known as benzene-1,4-diol or quinol, is an aromatic organic compound that is a type of phenol, a derivative of benzene, having the chemical formula C6H4(OH)2. It has two hydroxyl groups bonded to a benzene ring in a para position. It is a white granular solid.