"Ward's Science"

CAS Number: 547-58-0
Formula Weight: 327.35
Formula: C14H14N3NaO3S
Density (g/mL): 0.35-0.39
Freezing Point (°C): >300
Solubility: Hot Water
Synonyms: C.I. No. 13025, C.I. Acid Orange 52
Shelf Life (months): 36
Storage: Blue

CAS Number: 7757-83-7
Formula Weight: 126.04
Formula: Na₂SO₃
Hazard Info: Irritant
Density (g/mL): 1.4
Solubility: Water
Synonyms: Sulfurous Acid, Disodium Salt; Disodium Sulfite; Sodium Sulphite
Shelf Life (months): 12
Storage: Green

Note: The chemical specifications for some items on this product page may differ from the specifications listed above. For more information, consult the Safety Data Sheet or contact your Ward's representative.

CAS Number: 7727-43-7
Formula Weight: 233.43
Formula: BaSO₄
Density (g/mL): 4.5
Boiling Point (°C): 1580
Freezing Point (°C): 1580
Solubility: Concentrated Sulfuric Acid
Synonyms: Sulfuric Acid Barium Salt (1:1)
Shelf Life (months): 36
Storage: Green

CAS Number: 1308-38-9
Formula Weight: 152.02
Formula: Cr₂O₃
Hazard Info: Toxic
Density (g/mL): 5.1
Boiling Point (°C): 4000
Freezing Point (°C):

CAS Number: 39409-82-0
Formula: 4MgCO3·2Mg(OH)2·4H₂O/5H₂O
Density (g/mL): 2.16
Solubility: Acids and Slightly in Water
Synonyms: Magnesium Carbonate basic, tetrahydrate
Shelf Life (months): 36
Storage: Green

CAS Number: 1305-62-0
Formula Weight: 74.10
Formula: Ca(OH)₂
Hazard Info: Irritant, Corrosive
Density (g/mL): 2.24
Boiling Point (°C): as CaO 579
Freezing Point (°C): as CaO 2580
Solubility: Water, Glycerol, and Acids
Synonyms: Hydrated Lime, Slacked Lime, Caustic Lime, Calcium Hydrate
Shelf Life (months): 12
Storage: Green

Note: The chemical specifications for some items on this product page may differ from the specifications listed above. For more information, consult the Safety Data Sheet or contact your Ward's representative.

CAS Number: 6484-52-2
Formula: NH₄NO₃
Density: 1.73 g/mL
Boiling and Freezing Point: Decomposes, 169 °C
Solubility: Water, Alcohol, and Alkalies
Synonyms: Nitric Acid Ammonium Salt
Shelf Life: 36 Months

CAS Number: 2437-29-8
Formula: C52H54N4O2
Density: 1 g/mL
Solubility: Water and Alcohol
Synonyms: Basic Green 4, C.I. No. 42000
Shelf Life: 36 Months

CAS Number: 7758-11-4
Formula Weight: 174.18
Formula: K2HPO4
Solubility: Water
Synonyms: Dipotassium hydrogenorthophosphate
Shelf Life (months): 12
Storage: Green

CAS Number: 7789-12-0
Formula Weight: 298.05
Formula: Na2Cr2O7·2H2O
Hazard Info: Toxic, Corrosive
Density (g/mL): 2.348
Solubility: Water
Synonyms: Sodium Bichromate
Shelf Life (months): 12
Storage: Blue

Learn about the different pigments in plant material and how chromatography can help to separate molecules in a mixture.

Demonstrates the Effects of Acid Rain

CAS Number: 75-09-2
Formula Weight: 84.93
Formula: CH2Cl2
Hazard Info: Suspected Human Carcinogen
Boiling Point (°C): 40
Freezing Point (°C): -95
Solubility: Alcohol
Synonyms: Dichloromethane
Shelf Life (months): 36
Storage: Blue

The activities in this kit focus on developing a better understanding of why periodic trends occur in the elements.