"Ward's Science"

Stoichiometry for AP Chemistry

A series of ferrous ammonium sulfate samples with a range of known purities.

Learn about white blood cells, a critical part of the immune system, protecting the body from foreign invaders such as bacteria and viruses.

Use Raoult's Law to Determine the Effect of Temperature on Vapor Pressure

CAS Number: 9005-84-9 soluble, 9005-25-8 potato
Formula Weight: 162.15n
Formula: C6H10O5n
Density: 1.45 g/mL
Synonyms: Amylodextrin, Amylogen
Shelf Life: 36 Months

CAS Number: 13477-34-4
Formula Weight: 236.15
Formula: Ca(NO₃)₂·4H2O
Hazard Info: Flammable, Oxidizer, Explosive
Density (g/mL): 2.36
Boiling Point (°C): Decomposes
Freezing Point (°C): 45
Solubility: Water, Alcohol and Acetone
Synonyms: Calcium Nitrate Tetrahydrate, Nitric Acid Calcium(II) Salt
Shelf Life (months): 12
Storage: Yellow

CAS Number: 7783-85-9
Formula Weight: 392.14
Formula: Fe(NH4)2(SO4)2·6H2O
Density (g/mL): 1.86
Freezing Point (°C): 100-110
Solubility: Water
Synonyms: Ferrous Ammonium Sulfate Heptahydrate, Iron(II) Ammonium Sulfate 6-Hydrate
Shelf Life (months): 12
Storage: Green

Chemical specifications vary based on the product. For more information, consult the Safety Data Sheet or contact your Ward's representative.

CAS Number: 7727-73-3
Formula Weight: 322.19
Formula: Na₂SO₄·10H₂O
Density (g/mL): 1.46
Freezing Point (°C): 32.4
Solubility: Water
Synonyms: Glauber's Salt
Shelf Life (months): 36
Storage: Green

CAS Number: 7446-20-0
Formula Weight: 287.54
Formula: ZnSO₄·7H₂O
Hazard Info: Irritant
Density (g/mL): 1.97
Freezing Point (°C): 100
Solubility: Water
Shelf Life (months): 12
Storage: Green

CAS Number: 67-68-5
Formula Weight: 78.13
Formula: C2H6SO
Density (g/mL): 1.10
Boiling Point (°C): 189
Freezing Point (°C): 18.4
Solubility: Organic Solvents, Water
Synonyms: DMSO, Methyl Sulfoxide
Shelf Life (months): 36
Storage: Red

CAS Number: 8009-03-8
Density (g/mL): <1
Boiling Point (°C): >230
Freezing Point (°C): 35-80
Solubility: Organic Solvents (Not water)
Synonyms: Petroleum Jelly, Vaseline®
Shelf Life (months): 36
Storage: Green

CAS Number: 128-37-0
Formula Weight: 220.35
Formula: C₁₅H₂₄O
Hazard Info: Flammable, Toxic, Irritant
Density (g/mL): 0.899
Boiling Point (°C): 265
Freezing Point (°C): 69.44
Synonyms: 2,6-Di-Tert-Butyl-4-Methylphenol, BHT
Shelf Life (months): 36
Storage: Green

CAS Number: 10028-22-5
Formula Weight: 562
Formula: Fe2(SO4)3·nH2O
Density (g/mL): 3.1
Solubility: Water
Synonyms: Ferric Sulfate, Monsel's Salt
Shelf Life (months): 12
Storage: Green

Paramecium caudatum is a common protist that inhabits a variety of aquatic ecosystems.

What Does A Buffer Do?