what is an unsafe level of c8 polyfluorooctanoic acid in the human body?(teflon)?
103396
Good luck with this. A couple of searches online for LD50 of teflon show that most MSDS do not report this value and manufacturers of teflon aren't listing the value either. Quite possibly the unsafe level in humans or the LD50 isn't known.
1100315
It is carbon dioxide molecules produced devided by oxygen molecules consumed. In humans it is roughly 0.8
486269
Control of substances hazardous to health
447196
It depends on the amount you have ingested.  Generally not from a contact high though.
304285
Physical State: Solid \nAppearance: white to off-white to pink \nOdor: Not available. \npH: Not available. \nVapor Pressure: Not available. \nVapor Density: Not available. \nEvaporation Rate:Not available. \nViscosity: Not available. \nBoiling Point: Not available. \nFreezing/Melting Point:180 - 185 deg C \nDecomposition Temperature:Not available. \nSolubility: 4.3 G/L WATER (20°C) \nSpecific Gravity/Density:Not available. \nMolecular Formula:Not available. \nMolecular Weight:220.27 \n\nHarmful if swallowed. May cause eye and skin irritation. May cause respiratory and digestive tract irritation. The toxicological properties of this material have not been fully investigated. \nTarget Organs: None. \n\nPotential Health Effects \nEye: May cause eye irritation. \nSkin: May cause skin irritation. \nIngestion: Ingestion of large amounts may cause gastrointestinal irritation. The toxicological properties of this substance have not been fully investigated. \nInhalation: May cause respiratory tract irritation. The toxicological properties of this substance have not been fully investigated. \nChronic: No information found. \n\nFIRST AID\nEyes: Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid imme diately. \nSkin: Get medical aid. Flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes. \nIngestion: Do not induce vomiting. If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid. \nInhalation: Remove from exposure and move to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.\n\nHandling: Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation. \nStorage: Store in a cool, dry place. Keep container closed when not in use.
128131
These are dictated in the US by the FDA's cGMP guidlines (current Good Manufacturing Practices; not cyclic Guanine Monophosphate, as I had incorrectly thought when I first read it in a job description).\n\nThese are detailed in the following links:
802465
carboxylic acid, as represented by -(C=O)-OH. For more info, check the source.
577906
The Methyl Iso Cynate i.e. HCNO is the most dangerous gas.\nIt kills lacs of people in Bhopal(MP, India) in 1989 and caused mutation to lacs.
370772
CO2 is not toxic to humans, although you could suffocate if the CO2 is in the air at a very high concentration, so that there isn't enough oxygen.  If there is a such a risk in a fire, you should wear a self-contained breathing apparatus.\n\nFire extinguishers should be checked for pressure at least annually.  They should be refilled after every use, even if used just for a few seconds.
826503
I just watched a news special recently on nbc re: freezing water bottles.\n\nI found this article that I copied and pasted.  But I have also read on other websites that it does not.\n\n"DIOXINS Carcinogens cause cancer. Especially breast cancer. Don't freeze your plastic water bottles with water as this also releases dioxins in the plastic. Dr. Edward Fujimoto from Castle Hospital was on a TV program explaining this health hazard. He is the manager of the Wellness Program at the hospital. He was talking about dioxins and how bad they are for us. He said that we should not be heating our food in the microwave using plastic containers. This applies to foods that contain fat. He said that the combination of fat, high heat and plastics releases dioxins into the food and ultimately into the cells of the body. Dioxins are carcinogens and highly toxic to the cells of our bodies.\n\nThen I found this article from John Hopkins that says it does not\n\n\nBALTIMORE -- Johns Hopkins researchers have responded to an e-mail warning against freezing water bottles. A recent e-mail hoax claims Hopkins scientists warned people that freezing plastic bottles releases dioxins into the water. But the researchers say that's entirely false -- they said freezing plastic water bottles will not expose people to dangerous chemicals.\n\nResults | Disclaimer \n \nAccording to Dr. Rolf Halden, of the Johns Hopkins Bloomberg School of Public Health, freezing actually works against the release of chemicals and scientists are not even sure plastics contain dioxins. \nHowever, Halden does warn that another group of chemicals that are used to make plastic less brittle can be released if you place them in hot water or heat them in the microwave.\n\nBut Halden stresses that people should not be afraid of drinking water and that "you are more likely to suffer from the adverse effects of dehydration than from the miniscule amounts of chemical contaminants present in your water supply."\n\nHe also said people should be more concerned about the quality of the water they drink more than the bottle from which they drink it. Although people tend to assume bottled water is the safest route, Halden said city water is much more highly regulated and monitored for quality.
840986
I am quite not sure of what xtc you are referring to but I am certain that if it is a kind of drug or substance, it is purely an urban legend. Everything in the body fluids undergoes process of absorption, metabolism and elimination so I cannot think of any substance that won't be eliminated from a body for a lifetime.☺
863664
Well, it is a strong oxidant especially in an acidic form, so it could be a problem if it leaked onto anything combustible.  It is also very hazardous to health and environment, so accidental exposure can be a problem.   It will emit very toxic fumes in a fire situation, so it can be quite hazardous to firefighters, especially if they don't know its there.\n\nSome plastics may become brittle with age if it is stored too long, leading to breakage and leakage.\n\nI would say that is the biggest hazard, being accidentally exposed to to an improper containeer or labeling.
59733
Specifically:\n\nEnvironmentally hazardous substance, liquid, n.o.s.\ncontains Dibutylphthalate and Bisphenol A Epoxy Resin
871619
no,  i don't think so.  vitamin C is water soluble, basically that  means  you pee  out the excess  nutrients. Fat soluble vitamins can become  toxic because your  body stores them  in your  tissues  and can retain toxic levels.
104691
See data sheet for HCl. ZnCl2 is relatively harmless.
418602
Too many chemicals in food chain and atmosphere. PEsticides, stress, later childbirth, teflon on cooking utensils, chenoble, fluoride, pension doubts, tv, microwaves, bad vides, mobile phones, life!
835482
H2CO is formaldehyde.  It's actually a gas at room temperature so most likely you have a 37% aqueous solution of formadehyde called formalin.  As for the Conductivity Neutralizing Solution, formalin is often buffered with chemical salts that keep the pH with in certain range.  \n\nFormalin is used as a disinfectant and a tissue preservative.  If you've ever had a biopsy and the doctor puts it in a bottle to send to the lab, chances are it's a formalin bottle.  \n\nFormalin and formaldehyde is a known human carcinogen, which means it is a cancer causing agent.  Small, acute exposure to it is not life threatening, but prolonged exposure to the skin or fumes can cause cancer in humans.  So, if you don't know what the bottle is for, I suggest you throw it away.