"Ward's Science"

Determine the purity of a ferrous ammonium sulfate sample via gravimetric and spectrophotometric analysis.

CAS Number: 7440-21-3
Formula Weight: 28.09
Formula: Si
Density (g/mL): 2.3
Freezing Point (°C): 1440
Solubility: Mixture of Nitric and Hydrofluoric Acid and Alkalies
Shelf Life (months): 36
Storage: Green

CAS Number: 65997-19-5
Formula: Fe
Density: 7.86 g/mL
Freezing Point: 1535 °C
Solubility: Sulfuric Acid and Hydrochloric Acid
Synonyms: Iron Aggregate
Shelf Life: 36 Months

CAS Number: 10031-43-3
Formula Weight: 241.60
Formula: Cu(NO3)2·3H2O
Hazard Info: Toxic, Oxidizer
Density (g/mL): 2.32
Freezing Point (°C): 114.5
Solubility: Water and Alcohol
Synonyms: Copper Nitrate, Trihydrate, Copper(II) Nitrate 3-Hydrte
Shelf Life (months): 12
Storage: Yellow

CAS Number: 130-22-3
Formula Weight: 342.28
Formula: C₁₄H₇NaO₇S
Hazard Info: Irritant
Synonyms: Mordant Red 3, C.I. No. 58005
Shelf Life (months): 36
Storage: Green

(For creating “microaquana” for observation of protists)

CAS Number: 7784-31-8
Formula: Al2(SO4)3·18H2O
Density: 1.61 g/mL
Boiling Point: Decomposes
Freezing Point : 86°C
Solubility: Water
Shelf Life: 36 months

CAS Number: 57-55-6
Formula Weight: 76.10
Formula: CH3CH(OH)CH2OH
Density (g/mL): 1.038
Boiling Point (°C): 187
Freezing Point (°C): -59
Solubility: Miscible with Water and Organic Solvents
Synonyms: 1,2-Propanediol
Shelf Life (months): 36
Storage: Green

CAS Number: 9005-25-8
Formula Weight: (162.15)n
Formula: (C6H10O5)n
Density (g/mL): 1.45-1.6
Solubility: Hot Water
Synonyms: Maize Starch
Shelf Life (months): 12
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: 7758-09-0
Formula Weight: 85.11
Formula: KNO2
Hazard Info: Oxidizer, Flammable, Irritant
Density (g/mL): 1.915
Boiling Point (°C): Explodes at 538
Solubility: Water
Synonyms: Nitrous Acid, Potassium Salt
Shelf Life (months): 36
Storage: Yellow

CAS Number: 7757-82-6
Formula Weight: 142.04
Formula: Na₂SO₄
Density (g/mL): 2.698
Boiling Point (°C): >1000
Freezing Point (°C): 888
Solubility: Water
Synonyms: Disodium Sulfate
Shelf Life (months): 36
Storage: Green

CAS Number: 581-64-6
Formula Weight: 263.75
Formula: C₁₂H₁₀N₃SCl
Solubility: Hot Water
Synonyms: Lauth's Violet, Phenothiazin-5-ium, 3,7-diamino-, chloride
Shelf Life (months): 36
Storage: Green

CAS Number: 112-53-8
Formula Weight: 186.34
Formula: CH3(CH2)11OH
Density (g/mL): 0.830-0.836
Boiling Point (°C): 254
Solubility: Alcohol
Synonyms: 1-Dodecanol, Lauryl Alcohol
Shelf Life (months): 36
Storage: Green

CAS Number: Mixture
Formula Weight: Mixture
Formula: Mixture
Density (g/mL): 0.87
Boiling Point (°C): 139-141
Synonyms: Synthetic Mounting Medium, Piccolyte Slide Mounting Media
Shelf Life (months): 36
Storage: Red

Boiling Point: (°C): 117–118
CAS Number: 107-15-3
Density (g/mL): 0.898
Formula: H₂NCH₂CH₂NH₂
Formula Weight: 78.12
Freezing Point (°C): 11
Hazard Info: Flammable, Irritant, Toxic, Corrosive
Shelf Life (months): 36
Solubility: Water and Alcohol
Storage: Red

Please Note: This product is designed for educational and teaching laboratories and no certificate of analysis is available.