Is phenolphthalein a hazard indicator?
Is phenolphthalein a hazard indicator?
Ingestion: Causes gastrointestinal irritation with nausea, vomiting and diarrhea. Expected to be a low ingestion hazard. Inhalation: May cause respiratory tract irritation. Low hazard for usual industrial handling.
Is phenolphthalein solution hazardous?
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.
What is phenolphthalein used for?
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 dispose of phenolphthalein?
Do not let product enter drains. Contain spillage, and then collect with an electrically protected vacuum cleaner or by wet-brushing and place in container for disposal according to local regulations (see section 13).
What is the risk of 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 hazard class is phenolphthalein solution in?
Flammable liquids
Hazard class: Flammable liquids (Category 2). Highly flammable liquid and vapor (H225). Keep away from heat, sparks, open flames, and hot surfaces.
What is the procedure if you get phenolphthalein in your eye?
Irrigate copiously with clean, fresh water for at least 10 minutes, holding the eyelids apart. In case of eye irritation consult an ophthalmologist. Rinse mouth immediately and drink plenty of water. Call a doctor.
What is the nature of phenolphthalein?
– Phenolphthalein (HIn) is weakly acidic in nature and in aqueous solution, it dissociates into H+ and In− ions.
What property of phenolphthalein makes it a useful indicator?
Phenolphthalein is a type of internal indicator, which belongs to the group of dyes which is known as phthalein. It is often used as an indicator in the acid-base titration, because of its color changing properties with respect to change in pH of the solution.
Is phenolphthalein an acid or base?
phenolphthalein, (C20H14O4), an organic compound of the phthalein family that is widely employed as an acid-base indicator. As an indicator of a solution’s pH, phenolphthalein is colourless below pH 8.5 and attains a pink to deep red hue above pH 9.0.
What is the pH range of phenolphthalein indicator?
– Phenolphthalein is used in the pH range of 8.2 – 10.0, which is satisfied by Option (D).
