Particularly in older literature, compounds containing the functional group consisting of biphenyl less one hydrogen (the site at which it is attached) may use the prefixes xenyl or diphenylyl. It has a distinctively pleasant smell. Biphenyl is an aromatic hydrocarbon with a molecular formula (C6H5)2.
What is biphenyl most soluble in?
Biphenyl is a colorless to yellow leaflet or solid with a pleasant odor. It is soluble in alcohol, ether, benzene, methanol, carbon tetrachloride, carbon disulfide, and most organic solvents. It is insoluble in water. Biphenyl is one of the most thermally stable of all organic compounds (HSDB, 1991).
The term "sick building syndrome" (SBS) is used to describe situations in which building occupants experience acute health and comfort effects that appear to be linked to time spent in a building, but no specific illness or cause can be identified.
Emitted from paint as potentially harmful gases, volatile organic compounds, or VOCs, are a hot—and rather complicated— topic when it comes to indoor air quality. The number generally accepted for a low-VOC paint is less than 50 grams per liter; a zero-VOC paint has fewer than 5 grams per liter.
Volatile Organic Chemicals (VOCs) are carbon-containing compounds that evaporate easily from water into air at normal air temperatures. (This is why the distinctive odor of gasoline and many solvents can easily be detected.)
What are VOCs and what do the numbers mean? The seal has definitely been broken on the issue of VOCs, or volatile organic compounds, in paint. You can expect to see more brands touting their virtuous VOC content. VOCs are solvents that get released into the air as the paint dries.
BEHR PREMIUM PLUS Interior is a ZERO VOC, low odor, Paint & Primer in One that provides exceptional, best in class value and durability. BEHR PREMIUM PLUS® offers exceptional durability and hide with a finish that resists mildew and stains. In addition, you'll enjoy the benefits of a low odor and zero VOC paint.
According to CostHelper, the price of interior paint can range from $12-50 or more per gallon. Many low VOC options are available at this price point. Zero VOC paints, which have 5 grams/liter or fewer VOCs, are typically more expensive than low VOC or conventional options, and will cost about $30/gallon or more.
Any paint with a "Green Seal" logo of any kind has few enough VOC's that it is harmless to sleep in the room the same day the paint is applied. However, the paint is not odorless and will smell for at least 24 hours after painting. Typically the smell will lessen in 2-3 days if you keep the room well ventilated.
Research that has looked at paint exposure during pregnancy has not shown consistent results. These are usually latex paints that contain lower levels of solvents, or "volatile oil compounds." (Even the zero-VOC products may still contain some solvents.) Make sure you have good ventilation.
The risks are particularly high in heavy scented candles. The release of these chemicals inhaled over time can be very detrimental, especially to an infant's developing lungs. It wasn't just scented candles that posed this risk. After long periods of burning, the candle's wick can slowly emit soot into the air.
Is it true that pregnant women should avoid cats? It's perfectly fine to be around cats when you're pregnant, but you do need to be very careful about cleaning the litter box. That's because cat feces (and soil or sand where cats have been) can carry a parasitic infection called toxoplasmosis.
Dogs might get impatient when their pregnant owners walk more slowly, and cats could get annoyed that only the husband now scoops the cat litter. The answer, according to animal behavior specialists, is yes: pets probably can sense pregnancy. But it's not due to a sixth sense—it's their excellent sense of smell.
Cats are sensitive animals and they can pick up on the pheromones your body produces during pregnancy. Many woman have noticed their furry baby begin to act different as the pregnancy progresses. Some cats become more affectionate toward the expecting mother, or they act less rambunctious than normal.
Babies May Start Crying While in the Womb. Sept. 13, 2005 -- A baby's first cry may happen in the womb long before its arrival in the delivery room. New research shows that fetuses may learn to express their displeasure by crying silently while still in the womb as early as in the 28th week of pregnancy.
Dogs can sense when we are unhappy or are in pain as they are highly social animals.According to a study in 2004 it was found that dogs can be trained to detect bladder cancer from the smell of the patients urine. but there is no evidence that they posses sixth sense that can tell you'll going to die tomorrow.
Galvan and Vonk's finding suggests that cats are more in tune with human emotions than we thought. That does not mean they feel empathy. Still, even if cats do not truly understand our moods, the study still suggests that they can pick up on surprisingly nuanced human gestures.
Other superstitions include: a dog howl means the wind god has summoned death, and the spirits of the dead are being released; a howling dog in an otherwise silent night is the first warning of supernatural events; when you hear a dog howling it means bad luck for you or that someone you love will get sick or worse; a
Howling is one of many forms of vocal communication used by dogs. Dogs howl to attract attention, to make contact with others and to announce their presence. Some dogs also howl in response to high-pitched sounds, such as emergency vehicle sirens or musical instruments.
Most everyone is familiar with the belief that black cats bring bad luck or that a howling dog signifies that someone is about to die. Here are eight superstitions and myths about dogs and cats that you might not know.
More Evidence That Owning a Dog Is Really Good for You. Dogs are more than just cuddly companions — research continues to show that pets bring real health benefits to their owners. Having a dog around can lead to lower levels of stress for both adults and kids.
On average and depending on species, the cost of food alone is between $200 to $400 a year per bird. “My motto is feed you parrot well or spend more money at the vet,” Russell said. Her annual toy budget for each bird is similar to food, between $200 and $300 per year per bird.