2 physical and 3 chemical properties of the reactants and products of Aspirin...

( The image (1) above describes and shows how Aspirin is made. This is important to understand; in order to know the substances that makes up this product. This image was provided by Lola, from: http://www.odinity.com/aspirin-synthesis-analysis/)

The physical properties of the reactants of aspirin are:

Salicylic acid: a dry powder, white crystalline coloured,

Acetic anhydride: a colourless liquid with a strong vinegar-like odor.

The chemical properties of the reactants are:

Acetic anhydride:

- The Heat of combustion of 1807.1 kJ/mol.

- Lower flammable limit: 2.7%, higher flammable limit: 10.3% by volume.

- Toxicity: can be absorbed into the body by inhalation of its vapour and by ingestion. Its main targets are: the eye, the respiratory system and the skin.

absorbed into the body by inhalation of its vapour and by ingestion.:

Salicylic acid:

-Toxicity: Can get into the body by inhalation or ingestion, effects major body parts.

- Flammability: lower flammability of 1.1% at (200 degrees C.

- Heat of combustion of 3.026 millijoules/mole.

The physical properties of the products are:

Aspirin: White, crystalline powder.

Acetic acid: A solid powder with no colour.

properties of the reactants:

Aspirin:

- Gradually hydrolyses in contact with moisture to acetic acids.

- The pH of most aspirin tablets ranges from 2.8 to 3.2

- When it decomposes, it emits acrid smoke and fumes.

Acetic acid:

- pH scale of 1.0 molar.

- Corrosive.

- Heat of Combustion: 874.2 kJ/mol.