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Specification
AgeRangeDescription : Adult
Brand : FYYKXWD
BulletPoint1 : Purpose: Used to determine the melting point of crystals; Studying the melting and solidification processes of crystals,
BulletPoint2 : As an experimental apparatus for the melting and solidification of naphthalene.
BulletPoint3 : The entire instrument is integrated and easy to operate.
BulletPoint4 : There is a stirring device in this instrument, which can fully stir the naphthalene powder during the experimental process,
BulletPoint5 : Prevent naphthalene from melting near the pipe wall and causing rapid local temperature rise.
Color : One Color
CpsiaCautionaryStatement : no_warning_applicable
ExternallyAssignedProductIdentifier : 8258610050690
ItemName : Crystal Dissolution Solidification Experiment Study On The Dissolution and Solidification Process of Crystals Using A Naphthalene Dissolution and Solidification
ItemPackageDimensions_Height : 1 centimeters
ItemPackageDimensions_Length : 3 centimeters
ItemPackageDimensions_Width : 2 centimeters
ItemPackageQuantity : 1
ItemTypeKeyword : science-classroom-measurement-kits
Manufacturer : FYYKXWD
ModelName : FYYKXWD
ModelNumber : FYYKXWD
NumberOfBoxes : 1
NumberOfItems : 1
PartNumber : FYYKXWD
ProductDescription : Size: Glass cup outer diameter 80 * height 115mm
Small test tube outer diameter 25 * height 75mm Material: glass, plastic, metal
Weight: Approximately 250g per set
Purpose: Used to determine the melting point of crystals; Studying the melting and solidification processes of crystals,
As an experimental apparatus for the melting and solidification of naphthalene.
Product features and structure
1. The entire instrument is integrated and easy to operate.
2. There is a stirring device in this instrument, which can fully stir the naphthalene powder during the experimental process,
Prevent naphthalene from melting near the pipe wall and causing rapid local temperature rise.
usage method
1. Load 5-7 grams of naphthalene powder into a test tube, and insert a thermometer and a spiral stirrer through the tube stopper into the naphthalene powder. 2. Inject about 40 ml of hot water at 75-80 ℃ into the beaker
3. Place the test tube containing naphthalene powder into hot water and preheat for 3 minutes. When the temperature difference between naphthalene and water is less than 3 ℃, start using a spiral stirrer to rotate up and down in a spiral direction to evenly heat the crystal.
After the naphthalene temperature approaches the water temperature, heat it again while stirring and observing the temperature. Record the temperature of naphthalene and water at intervals specified by the teacher. When the temperature of naphthalene reaches 78 ℃, slow down the heating rate.
5. When the temperature of naphthalene rises to 79 ℃, the naphthalene powder on the inner wall of the test tube begins to melt and needs to be stirred repeatedly. At 80 ℃, a large amount of naphthalene melts by simply pulling the stirrer up and down.
6. When the temperature of naphthalene rises to 90 ℃, remove the test tube from the beaker and clamp it on the test tube clamp to let it cool naturally. Record the temperature at regular intervals until it solidifi
ProductSiteLaunchDate : 2024-10-31T14:16:54.312Z
Size : One Size
UnitCount : 1
UnspscCode : 31162400