"safety"

Meets AP Science Practices 2, 4, 5, and 6

CAS Number: 122-39-4
Formula Weight: Mixture
Formula: Mixture
Hazard Info: Toxic
Density (g/mL): 1.16-1.84
Boiling Point (°C): 275-325
Freezing Point (°C): <11
Solubility: Organic Solvents
Synonyms: Diphenylamine Oxidation-Reduction Indicator Solution, Diphenylamine-Sulfuric Acid Solution
Shelf Life (months): 36
Storage: White

CAS Number: 106-46-7
Formula Weight: 147.00
Formula: C6H4Cl2
Hazard Info: Toxic, Irritant
Density (g/mL): 1.458
Boiling Point (°C): 174
Freezing Point (°C): 53
Solubility: Organic Solvents
Synonyms: 1,4-Dichlorobenzene, para-Dichlorobenzene
Shelf Life (months): 12
Storage: Blue

CAS Number: 513-77-9
Formula Weight: 197.37
Formula: BaCO₃
Hazard Info: Toxic (if ingested)
Density (g/mL): 3.1
Freezing Point (°C): Near decomposition
Solubility: Acids (except Sulfuric)
Synonyms: Barium Salt, Carbonic Acid
Shelf Life (months): 36
Storage: Blue

CAS Number: 76-22-2
Formula Weight: 152.24
Formula: C₁₀H₁₆O
Hazard Info: Flammable, Toxic
Density (g/mL): 0.992
Boiling Point (°C): 207
Freezing Point (°C): 180
Synonyms: Bornan-2-One, Synthetic Camphor, Camphor Gum
Shelf Life (months): 36
Storage: Red

CAS Number: 6080-56-4
Formula Weight: 379.34
Formula: Pb(CH3COO)2·3H2O
Hazard Info: Toxic, Irritant, Carcinogen
Density (g/mL): 2.55
Boiling Point (°C): 280
Freezing Point (°C): 75
Solubility: Water and Glycerin
Synonyms: Lead Acetate
Shelf Life (months): 12
Storage: Blue

CAS Number: 1401-55-4
Formula Weight: 1701.23
Formula: C₇₆H₅₂O₄₆
Density (g/mL): >1.0
Freezing Point (°C): 210-215
Solubility: Water, Alcohol, and Acetone
Synonyms: Tanin, Gallotannic Acid, Pyrogallol Tannin
Shelf Life (months): 36
Storage: Green

CAS Number: 78-93-3
Formula Weight: 72.11
Formula: CH3COCH2CH3
Hazard Info: Flammable, Narcotic
Density (g/mL): 0.804-0.806
Boiling Point (°C): 79-81
Freezing Point (°C): -86.5
Solubility: Alcohol and Ether
Synonyms: 2-Butanone, MEK, Butanone
Shelf Life (months): 36
Storage: Red

CAS Number: 7783-90-6
Formula Weight: 143.32
Formula: AgCl
Hazard Info: Toxic
Density (g/mL): 5.56
Boiling Point (°C): 1550
Freezing Point (°C): 455
Solubility: Water, Ammonium Hydroxide, Sulfuric Acid, Sodium Thiosulfate and Potassium Bromide Solution
Synonyms: Chloride Salt of Silver
Shelf Life (months): 36
Storage: Green

CAS Number: 107-92-6
Formula Weight: 88.11
Formula: CH3(CH2)2COOH
Hazard Info: Corrosive, Irritant, Strong Odor
Density (g/mL): 0.959
Boiling Point (°C): 163.5
Freezing Point (°C): -5.2
Synonyms: Ethylacetic Acid, Butanoic Acid
Shelf Life (months): 36
Storage: White

CAS Number: 58-08-2
Formula Weight: 194.20
Formula: C₈H₁₀N₄O₂
Hazard Info: Toxic
Density (g/mL): 1.23
Boiling Point (°C): 178
Freezing Point (°C): 238
Solubility: Chloroform, Water and Alcohol
Synonyms: 1,3,7-Trimethylxanthine
Shelf Life (months): 12
Storage: Blue

CAS Number: 1308-06-1
Formula Weight: 240.82
Formula: Co₃O₄
Density (g/mL): 5.2-6.1
Freezing Point (°C): 895
Solubility: Sulfuric Acid
Synonyms: Cobalt(II,III) Tetraoxide, Cobalt Oxide
Shelf Life (months): 36
Storage: Green

CAS Number: 107-21-1
Formula Weight: 62.07
Formula: HOCH2CH2OH
Hazard Info: Toxic
Density (g/mL): 1.1135
Boiling Point (°C): 198
Freezing Point (°C): -13
Solubility: Water, Alcohol and Acetone
Synonyms: 1,2-Ethanediol
Shelf Life (months): 12
Storage: Green

CAS Number: 13478-10-9
Formula Weight: 198.81
Formula: FeCl2·4H2O
Density (g/mL): 1.93
Boiling Point (°C): 1026
Freezing Point (°C): 105-115
Solubility: Water
Synonyms: Ferrous Chloride Tetrahydrate, Iron(II) Chloride 4-Hydrate
Shelf Life (months): 12
Storage: White

CAS Number: 1309-48-4
Formula Weight: 40.30
Formula: MgO
Hazard Info: Toxic
Density (g/mL): 3.65-3.75
Boiling Point (°C): 3600
Freezing Point (°C): 2800
Solubility: Acids and Slightly in Water
Synonyms: Magnesia, Calcinated Magnesia, Calcined Brucite
Shelf Life (months): 12
Storage: Green

Measure pH across a range of food products with wireless testers designed for milk, cheese, and meat analysis in food science and agricultural studies.