How will you prepare 0.1 phenolphthalein indicator?
Phenolphthalein Indicator Solution, Dilute: Dissolve 0.1 g of phenolphthalein in 80 ml of ethanol (95 percent) and add sufficient water to produce 100 ml.
How is phenolphthalein produced?
Phenolphthalein, which is closely related to the triphenylmethane dyes, was discovered in 1871 by the German chemist Adolf von Baeyer, who prepared it by fusing phenol and phthalic anhydride in the presence of sulfuric acid or zinc chloride, the procedure still employed.
What is the chemical formula for phenolphthalein?
Is phenolphthalein safe to drink?
Under typical conditions of use, over-exposure to phenolphthalein solution is not likely. Ingestion of even small quantities of phenolphthalein or its solutions will purge most persons.
How dangerous is phenolphthalein?
Skin May be harmful if absorbed through skin. May cause skin irritation. Eyes May cause eye irritation. Ingestion May be harmful if swallowed.
What does phenolphthalein do to the body?
Phenolphthalein is an organic compound used as a laboratory reagent and pH indicator. Phenolphthalein exerts laxative effects by stimulating the intestinal mucosa and constricting smooth muscles.
How do you clean phenolphthalein?
After skin contact: Wash affected area with soap and water. Rinse/flush exposed skin gently using water for 15-20 minutes. Seek medical attention if irritation persists or if concerned.
What happens if you smell phenolphthalein?
May cause irritation of the digestive tract. Ingestion may cause fever, blood pressure increase and other unspecified vascular effects. Inhalation: May cause respiratory tract irritation. May be harmful if inhaled.
Why do I like smelling mothballs?
Mothballs are solid balls that give off an odor that deters moths. The odor comes from a substance in the mothball that turns from a solid into a gas that can be inhaled. Teens sniff mothballs like a medicine to get high. The substance that gives them this high is either naphthalene or dichlorobenzene.
Can I put mothballs in my room?
Mothballs should not be placed in closets, attics, basements, storage chests or trunks, garment bags or other spaces other than in tightly closed containers as explained above. Gasses from the mothballs escape into the air and can cause respiratory problems.
Is smelling naphthalene balls harmful?
Inhalation of naphthalene may cause skin and eye irritation; gastrointestinal symptoms, such as nausea, vomiting, abdominal cramps, and diarrhea; neurologic symptoms, such as confusion, excitement, and convulsions; renal problems, such as acute renal shutdown; and hematologic features, such as icterus and severe anemia
What happens if we eat naphthalene balls?
People have developed headaches, nausea, dizziness, and/or vomiting after being exposed to naphthalene vapors. Small children have also developed diarrhea, fever, abdominal pain, and painful urination with discolored urine after eating naphthalene mothballs.
Why are moth balls banned?
Old fashioned moth balls containing naphthalene or paradichlorobenzene were banned in the EU Environmental Protection Agency in 2008 because of their potential risk to human health. Both chemicals can cause ill health by breathing in fumes over time or ingestion which is a serious risk for small children.
Can you touch mothballs?
If you touch mothballs, naphthalene can enter your body. Most naphthalene leaves the body within three days. How can naphthalene affect my health? Exposure to large amounts of naphthalene may damage or destroy red blood cells, a condition called hemolytic anemia.
Is it illegal to use moth balls outside?
Using mothballs to repel pests in the garden presents a danger to children, pets and wildlife that visit your garden. Mothballs are insecticides that are controlled by the Environmental Protection Agency. This makes it illegal to use them for any purpose or by any method that isn’t specified on the label.
What animals are repelled by mothballs?
4. Mothballs sometimes are used illegally to repel pests not listed on labels. Some of these “off-label pests” include: squirrels, skunks, deer, mice, rats, and snakes, among others animals. Use mothballs pesticide products to control the pests listed on the label only!
How long does moth balls last?
Mothballs can last up to four to six weeks, and they can last even longer if you store your garments in a tightly sealed container. Regardless of how long the mothballs last before they dissolve, the smell will likely last longer.
What to use instead of mothballs?
Natural Mothball Alternatives for Storage
- Lavender Satchels. While the soothing scent of lavender is wonderful for us, most moths stay away from it.
- Cedar Chips and Blocks. The aromatic aroma of cedar repels many kinds of insects and pests.
- Cloves, Rosemary and Thyme.
- Airtight Containers.
- White Camphor Oil.
What is it when your breath smells like mothballs?
The scent of skatole resembles mothballs, so if your breath smells like mothballs, you may have a condition that causes excess mucus in the mouth. You might have a sinus infection, allergies or another condition that results in mucus running down the back of the throat, also known as postnasal drip.