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Preparation of Antifebrin

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Introduction

Phenylammonium chloride/Anilinium chloride TYPES OF HAZARD / EXPOSURE ACUTE HAZARDS / SYMPTOMS PREVENTION FIRST AID / FIRE FIGHTING FIRE Combustible. Gives off irritating or toxic fumes (or gases) in a fire. NO open flames. NO contact with oxidants. Powder, water spray, foam, carbon dioxide. EXPLOSION Risk of fire and explosion on contact with oxidants. EXPOSURE AVOID ALL CONTACT! IN ALL CASES CONSULT A DOCTOR! Inhalation Cough. Sore throat. Blue lips or finger nails. Blue skin. Confusion. Convulsions. Dizziness. Headache. Nausea. Unconsciousness. Local exhaust or breathing protection. Fresh air, rest. Refer for medical attention. See Notes. Skin MAY BE ABSORBED! Redness. Protective gloves. Protective clothing. Remove contaminated clothes. Rinse and then wash skin with water and soap. Refer for medical attention. ...read more.

Middle

EXPLOSION Above 49�C explosive vapour/air mixtures may be formed. Above 49�C use a closed system, ventilation, and explosion-proof electrical equipment. In case of fire: cool drums, etc., by spraying with water but avoid contact of the substance with water. EXPOSURE AVOID ALL CONTACT! IN ALL CASES CONSULT A DOCTOR! Inhalation Cough. Laboured breathing. Shortness of breath. Sore throat. Ventilation, local exhaust, or breathing protection. Fresh air, rest. Half-upright position. Artificial respiration may be needed. Refer for medical attention. Skin Redness. skin burns. Pain. Blisters. Effects could be delayed Protective gloves. Protective clothing. Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention. Eyes Causes watering of the eyes. Redness. Pain. Burns. Face shield or eye protection in combination with breathing protection. ...read more.

Conclusion

Appeared Immiscible. Added the 2nd beaker to the 1st and a white precipitate was formed. Mixture filtered under reduced pressure, to leave the white precipitate, which is now crude antifebrin. Cold water poured over the top to rinse the crude antifebrin has no effect. Just over 25cm3 hot water, precipitate fully dissolves to clear liquid. Liquid placed into ice bath, and the precipitate returns white, but finer. Dried the product and placed a small amount aside to record melting point. Melting point: 114C to 116C Predicted mass: 1.0g/129.5g = 0.007722 moles Equation: C6H5NH3+Cl- + (CH3CO)2O = CH3CONHC6H5 + CH3COOH + HCL Molar ratio: 1 + 1 = 1 + 1 + 1 Mass: 1.0 + / = 1.0 + / + / Number of moles of Phenylammonium = Number of moles CH3CONHC6H5 0.007722 = 0.007722 0.007722 x 135g = 0.945g Predicted mass of CH3CONHC6H5 Actual: 0.40 Percentage Mass: Actual/Predicted = 0.4/0.945 = 0.42 ...read more.

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