Instruct: Given a question, retrieve passages that answer the question.
Query: What chemicals are in embalming fluid?
Generally, the risks to prosectors are low. Cadavers used for teaching purposes are embalmed before they are encountered by a prosector and students. Embalming fluid usually contains formaldehyde, phenol, Dettol, and glycerine which disinfect and kill pathogens within the cadaver. With exposure to embalming fluid, tissues and bodily fluids, such as blood, become fixed. Prosectors and students working with embalmed cadavers must always wear protective gloves, however this is more for protection against the harsh chemicals used in embalming such as formaldehyde and dettol which can cause moderate to severe skin irritation.
In any part of the world that uses organophosphates, "C. megacephala" could prove to be beneficial. Organophosphate compounds are used in agriculture and are highly toxic. Organophosphate poisoning often causes death, and in many cases, by evaluating the body tissue and fluids, the toxin can be identified as the source of the poisoning. However, it is somewhat difficult to evaluate the body tissue in a body that is exceedingly decomposed. Nevertheless, a medical examiner in Hawaii worked on a case in which poisoning by malathion, an organophosphate insecticide, was thought to be the cause of death. The victim’s stomach contents and body fat were examined and found to have contained malathion. The fly larvae of "Chrysomya megacephala" and "Chrysomya rufifacies" were also present at the scene on the body and were tested for malathion. Both of these species did contain malathion, but there had been no previous record of organophosphates in their larvae. Studying larvae from decomposed remains may provide an effective method of determining the presence of these toxins in a body that is extremely decayed.
On the day of Alice Wentworth's wedding, mad scientist Dr. Lorenz sends the young bride an unusual orchid, the scent of which places the young woman in a state of suspended animation resembling death. He then spirits her body away to the basement laboratory of his isolated mansion and extracts glandular fluid from behind her ears to inject into his vain and aged wife in order to renew her youth and beauty. This is only the latest in a series of brides who appear to die at the altar and whose corpses subsequently vanish en route to the hospital or mortuary, and the police are thoroughly stymied.
The Chinchorro mummies are the oldest intentionally prepared mummified bodies ever found. Beginning in 5th millennium BC and continuing for an estimated 3,500 years, all human burials within the Chinchorro culture were prepared for mummification. The bodies were carefully prepared, beginning with removal of the internal organs and skin, before being left in the hot, dry climate of the Atacama Desert, which aided in desiccation. A large number of Chinchorro mummies were also prepared by skilled artisans to be preserved in a more artistic fashion, though the purpose of this practice is widely debated.
In addition to the well-known mummies of ancient Egypt, deliberate mummification was a feature of several ancient cultures in areas of America and Asia with very dry climates. The Spirit Cave mummies of Fallon, Nevada in North America were accurately dated at more than 9,400 years old. Before this discovery, the oldest known deliberate mummy was a child, one of the Chinchorro mummies found in the Camarones Valley, Chile, which dates around 5050 BC. The oldest known naturally mummified human corpse is a severed head dated as 6,000 years old, found in 1936 AD at the site named Inca Cueva No. 4 in South America.
Calcium hydroxide (traditionally called slaked lime) is an inorganic compound with the chemical formula Ca(OH). It is a colorless crystal or white powder and is obtained when calcium oxide (called "lime" or "quicklime") is mixed, or slaked with water. It has many names including hydrated lime, caustic lime, builders' lime, slack lime, cal, or pickling lime. Calcium hydroxide is used in many applications, including food preparation, where it has been identified as E number E526. Limewater is the common name for a saturated solution of calcium hydroxide.
The distinguishing factor between the process of non-human animal and human mummification is when the two types were mummified. Humans had been mummified consistently since the days of the early conquerors of Lower Egypt, hundreds of years before even the first non-human animal was mummified. The earliest signs of non-human animal mummies are dated to the Badarian Predynastic Period (5500–4000BC) after the unification of upper and lower Egypt. It is likely that animal mummies did not exist earlier on because mummification was less accessible primarily due to cost. 
In general, the mummifying of animals was not given the careful attention afforded to humans. Mummies sold to pilgrims as offerings were only minimally treated, and unlike humans, even the most sacred of animals, such as the Apis bulls, did not have their internal organs preserved. The large scale of production indicates that relatively little care and expense was involved in animal preparation compared to human mummies. However, recent radiological studies by archeologists indicate that animal mummification may more closely follow human mummification than was originally thought. The accepted view is that animals were merely wrapped in coarse linen bandages and/or dipped in resin after death. However, as with human mummification there was a range in terms of the quality of treatments. A simple visual analysis of the mummies suggests that some animal mummies were treated with the same complexity as those of humans. Egyptians treated animals with great respect, regarding them both as domestic pets and representatives of the gods. The presence of fats, oils, beeswax, sugar gum, petroleum bitumen, and coniferous cedar resins in animal mummies shows that the chemicals used to embalm animals were similar to those used on humans.
To prevent against alcohol abuse in the United States, all preparations classified as "Rubbing Alcohols" (defined as those containing ethanol) must have poisonous additives to limit human consumption in accordance with the requirements of the US Treasury Department, Bureau of Alcohol, Tobacco, and Firearms, using Formula 23-H (8 parts by volume of acetone, 1.5 parts by volume of methyl isobutyl ketone, and 100 parts by volume of ethyl alcohol). It contains 87.5–91% by volume of absolute ethyl alcohol. The rest consists of water and the denaturants, with or without color additives, and perfume oils. Rubbing alcohol contains in each 100 ml more than 355 mg of sucrose octaacetate or more than 1.40 mg of denatonium benzoate. The preparation may be colored with one or more color additives. A suitable stabilizer may also be added.
Alexander Fleming had first discovered penicillin by accident in 1928, but at that time believed it had little application. When Florey and his team recognised the potential of the discovery for combating bacterial infection, they faced the problem of how to manufacture penicillin in sufficient quantities to be of use. Heatley, although the junior member of the team, possessed a natural gift for ingenuity and invention. It was he who suggested transferring the active ingredient of penicillin back into water by changing its acidity, thus purifying the penicillin.
Originally a land-locked fresh water lake, the Black Sea was flooded with salt water from the Mediterranean Sea during the Holocene. The influx of salt water essentially smothered the fresh water below it because a lack of internal motion and mixing meant that no fresh oxygen reached the deep waters, creating a meromictic body of water. The anoxic environment, which is hostile to many biological organisms that destroy wood in the oxygenated waters, provides an excellent testing site for deep water archaeological survey.
The extremely high temperatures of lava flows (1200 °C; 2200 °F) cause sea water to decompose into hydrogen and oxygen. The hydrogen combines with chloride ions dissolved in sea water, forming hydrogen chloride gas (hydrochloric acid). The rapidly rising plume of gas also carries with it fine particles of volcanic glass. The hydrochloric acid and other contaminants can precipitate out rapidly and the plume may become relatively safe a few hundred meters away, however, laze plumes should be shown a degree of respect as they can and have killed people who come in contact with them. The USGS has reported that, in 2000, two people were killed by exposure to laze clouds.
During the course of the novel, the ideas of the stages of grief are introduced. The stages are denial, anger, depression, and acceptance. The narrator, as well as other characters in the story, slowly passes through these stages in trying to deal with death.
Industrial espionage was implicated in the capacitor plague, in connection with the theft of an electrolyte formula. A materials scientist working for Rubycon in Japan left the company, taking the secret water-based electrolyte formula for Rubycon's ZA and ZL series capacitors, and began working for a Chinese company. The scientist then developed a copy of this electrolyte. Then, some staff members who defected from the Chinese company copied an incomplete version of the formula and began to market it to many of the aluminium electrolytic manufacturers in Taiwan, undercutting the prices of the Japanese manufacturers. This incomplete electrolyte lacked important proprietary ingredients which were essential to the long-term stability of the capacitors and was unstable when packaged in a finished aluminum capacitor. This faulty electrolyte allowed the unimpeded formation of hydroxide and produced hydrogen gas.
With the outbreak of World War II, weaponization of botulinum toxin was investigated at Fort Detrick in Maryland. Carl Lamanna and James Duff developed the concentration and crystallization techniques that Edward J. Schantz used to create the first clinical product. When the Army’s Chemical Corps was disbanded, Schantz moved to the Food Research Institute in Wisconsin, where he manufactured toxin for experimental use and generously provided it to the academic community.
Like other marine mollusks, cuttlefish have ink stores that are used for chemical deterrence, phagomimicry, sensory distraction, and evasion when attacked. The composition of the ink leads to a richly colored "black" ink which is rich in ammonium salts and amino acids that may have a role in phagomimicry defenses.
Modern day fracking equipment is capable of pumping anywhere from 800-4200 gallons of water per minute, at pressures ranging from 500-20,000+ psi. Once the injection process is complete and gas has entered the well, anywhere between 10 and 30 percent of the fluid injected will flow back into the well as wastewater for disposal.  In addition to the chemical additives present in fracking fluid, flowback water contains dangerous volatile hydrocarbons, such as hydrogen sulfide pulled from the fractured rock. Workers must use handheld gauges to check fluid levels via hatches on top of wells and when doing so they may be exposed to dangerous plumes of gas and vapor containing the volatile hydrocarbons.  Exposure to these chemicals and hydrocarbons can affect the nervous system, heart rhythms, and may lead to asphyxiation or death.
Egyptologist Bob Brier suggested that Ay murdered Tutankhamun in order to usurp the throne, a claim which was based on X-ray examinations of the body done in 1968. He also alleged that Ankhesenamun and the Hittite prince she was about to marry were also murdered at his orders. This murder theory was not accepted by all scholars, and more detailed CT scans of the mummy undertaken by National Geographic (published in late 2005) suggested that Tutankhamun did not die from a blow to his head as Brier had theorized. The "National Geographic" forensic researchers instead presented a new theory that Tutankhamun died from an infection caused by a badly broken leg since he is often portrayed as walking with a cane due to spina bifida, a hereditary trait in his family on his father's side. The bone fragments found in Tutankhamun's skull were most likely the result of post-mortem damage caused by Howard Carter's initial examination of the boy king "because they show no evidence of being inundated with the embalming fluid used to preserve the pharaoh for the afterlife". However, Brier has stated that the bone fragment in the skull is not relevant to the issue of whether Tutankhamun was murdered, acknowledging that it was likely caused by the embalmers. The evidence Brier presents for the murder is a dark spot on the base of the skull, indicating a blow to the head. Dr. Gerald Irwin agrees with Brier on this point.
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Processing a denture is usually performed using a lost-wax technique whereby the form of the final denture, including the acrylic denture teeth, is invested in stone. This investment is then heated, and when it melts the wax is removed through a spruing channel. The remaining cavity is then either filled by forced injection or pouring in the uncured denture acrylic, which is either a heat cured or cold-cured type. During the processing period, heat cured acrylics—also called permanent denture acrylics—go through a process called polymerization, causing the acrylic materials to bond very tightly and taking several hours to complete. After a curing period, the stone investment is removed, the acrylic is polished, and the denture is complete. The end result is a denture that looks much more natural, is much stronger and more durable than a cold cured temporary denture, resists stains and odors, and will last for many years.
The supply of printed anatomy books from Italy and France led to an increased demand for human cadavers for dissections. Since few bodies were voluntarily donated for dissection, royal charters were established which allowed prominent universities to use the bodies of hung criminals for dissections. However, there was still a shortage of bodies that could not accommodate for the high demand of bodies. Until the middle of the 18th century, there was a quota of ten cadavers for each the Royal College of Physicians and the Company of Barber Surgeons, the only two groups permitted to perform dissections. During the first half of the 18th century, William Cheselden challenged the Company of Barber Surgeon’s exclusive rights on dissections. He was the first to hold regular anatomy lectures and demonstrations. He also wrote "The Anatomy of the Humane Body," a student handbook of anatomy. In 1752, the rapid growth of medical schools in England and the pressing demand for cadavers led to the passage of the Murder Act. This allowed medical schools in England to legally dissect bodies of executed murderers for anatomical education and research and also aimed to prevent murder. To further increase the supply of cadavers, the government increased the number of crimes in which hanging was a punishment. Although the number of cadavers increased, it was still not enough to meet the demand of anatomical and medical training.
An "aging barrel" is used to age wine; distilled spirits such as whiskey, brandy, or rum; beer; tabasco sauce; or (in smaller sizes) traditional balsamic vinegar. When a wine or spirit ages in a barrel, small amounts of oxygen are introduced as the barrel lets some air in (compare to microoxygenation where oxygen is deliberately added). Oxygen enters a barrel when water or alcohol is lost due to evaporation, a portion known as the "angels' share". In an environment with 100% relative humidity, very little water evaporates and so most of the loss is alcohol, a useful trick if one has a wine with very high proof. Most beverages are topped up from other barrels to prevent significant oxidation, although others such as vin jaune and sherry are not.
Embalming chemicals are a variety of preservatives, sanitising and disinfectant agents, and additives used in modern embalming to temporarily prevent decomposition and restore a natural appearance for viewing a body after death. A mixture of these chemicals is known as embalming fluid and is used to preserve bodies of deceased persons for both funeral purposes and in medical research in anatomical laboratories. The period for which a body is embalmed is dependent on time, expertise of the embalmer and factors regarding duration of stay and purpose.
When an embalmed body is buried and decays, the embalming fluid can seep into the ground and affect the surrounding soil and water ecosystems. Since embalming fluid largely consists of formaldehyde, it is the chemical that has the most dramatic effect on its surroundings. The fluid that is injected into the blood vessels of the cadaver is up to 5% formaldehyde while the fluid injected into the body cavity is up to 37%.
Embalming chemicals are generally produced by specialist manufacturers, The oldest embalming fluid company is the Champion Company, being founded in 1878, followed by the Dodge Company in 1893, with other companies include Egyptian, now U.S. Chemical, as well as Kelco Supply Company (formerly L H Kellogg), Pierce Chemical Company,(Now Owned by The Wilbert Company), Bondol Chemical Company, and Hydrol Chemical Company. There are many smaller and regional producers such as Lear Barber in Sheffield, Genelyn, Frigid Fluid Co., and Trinity Fluids, LLC to name but a few. Some funeral homes produce their own embalming fluids, although this practice has declined in recent decades as commercially available products have become of better quality and more readily available.
A rather different process is used for cadavers embalmed for dissection by medical professionals, students, and researchers. Here, the first priority is for long-term preservation, not presentation. As such, medical embalmers use anatomical wetting fluids that contain concentrated formaldehyde (37–40%, known as formalin) or glutaraldehyde and phenol, and are made without dyes or perfumes. Many embalming chemical companies make specialized anatomical embalming fluids.