"Freeze-Dried+Specimens"

CAS Number: 7789-23-3
Formula Weight: 58.10
Formula: KF
Density (g/mL): 2.481
Boiling Point (°C): 1505
Freezing Point (°C): 859
Solubility: Water and Hydrochloric Acid
Shelf Life (months): 36
Storage: Blue

A set of 15 samples of different materials used to challenge students to identify materials based on measurement of their density. For some specimens this will be straightforward. In other cases, it will lead to a discussion of uncertainty in measurements and data, and to an awareness that different materials may have nearly the same density.

CAS Number: Mixture
Density: 1.0 g/mL
Boiling Point: 100 °C
Freezing Point: 0 °C
Synonyms: Iodine-Potassium Iodide Solution, IKI, Iodine-Iodine, Iodine Solution, Iodine Lugol's Dilute, and Iodine 2%
Shelf Life: 36 Months

CAS Number: 3811-04-9
Formula: KClO3
Density: 2.34 g/mL
Boiling and Freezing Point: 400°C, 368°C
Solubility: Boiling Water
Synonyms: Chlorate of Potash, Chloric Acid Potassium Salt, Potassium Oxymuriate
Shelf Life: 36 Months

Stains cells an intense blue for ease of visualization in histological specimens.

CAS Number: 7647-17-8
Formula Weight: 168.36
Formula: CsCl
Density (g/mL): 4
Boiling Point (°C): 645
Freezing Point (°C): 1290
Solubility: Water
Shelf Life (months): 36
Storage: Green

CAS Number: Mixture
Formula Weight: Mixture
Formula: Mixture
Density (g/mL): 1.049
Boiling Point (°C): 118.1
Freezing Point (°C): 16.7
Synonyms: Aceto-Orcein Biological Stain
Shelf Life (months): 36
Storage: White

CAS Number: 7758-99-8
Formula: CuSO4 5H2O
Density: 2.284 g/mL
Freezing Point: 150°C
Solubility: Water and Methanol
Synonyms: Copper II Sulfate 5-Hydrate, Cupric Sulfate 5-Hydrate
Shelf Life: 36 Months

CAS Number: 7558-80-7
Formula Weight: 120.00
Formula: NaH2PO4
Density (g/mL): 2.047
Freezing Point (°C): 60
Synonyms: Sodium biphosphate, Sodium Dihydrogen Phosphate
Shelf Life (months): 36
Storage: Green

CAS Number: 7447-40-7
Formula: KCl
Density: 1.986—1.990 g/mL
Boiling and Freezing Point: 1500 °C, 772 to 776 °C
Solubility: Water and Alcohol
Synonyms: Muriate of Potash, Potassium Muriate, Potassium Monochloride
Shelf Life: 36 Months

CAS Number: 62625-21-2
Formula Weight: Mixture
Formula: Mixture
Density (g/mL): Approximately 1
Boiling Point (°C): Approximately 0
Freezing Point (°C): Approximately 100
Solubility: Alcohol and Acetic Acid
Shelf Life (months): 36
Storage: Green

CAS Number: Mixture
Formula Weight: Mixture
Density: 1.0 g/mL
Boiling and Freezing Point: 100°C, 0°C
Solubility: Water
Synonyms: Benedict's Sugar Test Reagent, Benedict's Solution
Shelf Life: 36 Months   

CAS Number: 9005-84-9
Formula: Mixture
Density: Approximately 1 g/mL
Boiling and Freezing Point: Approximately 100 °C, Approximately 0°C
Solubility: Organic Solvents, Not Soluble in Water
Synonyms: Starch, Aqueous Solution
Shelf Life: 36 Months

CAS Number: Mixture
Formula Weight: Mixture
Formula: Mixture
Hazard Info: Corrosive
Density (g/mL): 1.049
Boiling Point (°C): 118.1
Freezing Point (°C): 16.7
Shelf Life (months): 12
Storage: White

CAS Number: 7440-55-3
Formula Weight: 69.72
Formula: Ga
Density (g/mL): 5.904
Boiling Point (°C): 2403
Freezing Point (°C): 29.78
Solubility: Acids
Shelf Life (months): 36
Storage: White

CAS Number: 7778-50-9
Formula Weight: 294.19
Formula: K2Cr2O7
Density (g/mL): 2.67
Freezing Point (°C): 398
Solubility: Water
Synonyms: Potassium Bichromate
Shelf Life (months): 36
Storage: Yellow