BP2017/EP9.0

Items		Standard
Appearance		White or almost white, crystalline powder or colourless crystals
Solubility		Slightly soluble in water, freely soluble in ethanol (96 per cent)
MP		At about 143 ℃
Identification A. IR-Spectrum		Should be complied with Reference Spectrum
IdentificationB.Melting point of salicylic acid		156—161 ℃
Appearance of solution		Clear and colorless
Heavy metals		≤20 ppm
Loss on drying		≤0.5%
Sulphated ash		≤0.1%
Related substances	AImpurity A	≤0.15%
	BImpurity B	≤0.15%
	CImpurity C	≤0.15%
	DImpurity D	≤0.15%
	EImpurity E	≤0.15%
	FImpurity F	≤0.15%
	Other impurities	≤0.05%
	Total impurities	≤0.25%
Assay		99.5%—101.0%

Properties

Aspirin, also known as acetylsalicylic acid, is a non steroidal anti-inflammatory drug, which was first used for anti-inflammatory and analgesic. Later scientists found that aspirin can prevent platelet aggregation to achieve antithrombotic effect. With the deepening of aspirin research, many new uses have been found, such as aspirin can reduce the mortality of myocardial infarction and stroke, and can also reduce the risk of colorectal cancer.

CAS No.

50-78-2

Formula

C9H8O4

Molecular Mass

180.15700

Exact Mass

180.04200

PSA

63.60000

Logp

1.31010