A solution of phenol red is a liquid.
same as rock
No
Phenol is a viscous liquid or can be crystals as phenol has a melting point of 40.5°C which would make it a solid at room temperature.
Liquid resols of phenol formaldehyde resin can be stored for longer time. Free formaldehyde needs to be controlled at the end of the reaction. This will be possible by adding formaldehyde scavanegers. The pH of reaction is most important in this regard. Adjust the pH of the PF resin to 7 to 7.5 using acid such as acetic acid to increase in shelf lift. Some resols can be stored up to 6 months below 25 deg C.
Liquid resols of phenol formaldehyde resin can be stored for longer time. Free formaldehyde needs to be controlled at the end of the reaction. This will be possible by adding formaldehyde scavanegers. The pH of reaction is most important in this regard. Adjust the pH of the PF resin to 7 to 7.5 using acid such as acetic acid to increase in shelf lift. Some resols can be stored up to 6 months below 25 deg C.
Benadryl, or diphenhydramine hydrochloride, has a shelf life of one year for pills and six months for liquid/suspensions. However, this particular medicine only lose a little effectiveness past this shelf life, and is not harmful.
Once reconstituted with water, oral suspension shelf life is as short as five days but possibly effective up to 15 days, especially if refrigerated.
Phenol formaldehyde resin is typically prepared as a colorless or slightly yellowish liquid. The color can vary depending on the specific formulation and processing conditions used during preparation.
Whar is the shelf life of the " Idioms "
The shelf life of liquid prednisolone typically ranges from 12 to 24 months, depending on the formulation and storage conditions. It's essential to check the expiration date on the medication label and store it in a cool, dry place away from light. Once opened, it may have a shorter shelf life, so always refer to specific guidelines provided by the manufacturer or your pharmacist. If in doubt, consult a healthcare professional before using.
The shelf life of Chloramphenicol when it is unopened is 24 months. The shelf life when it's opened is 28 days.