Acetylsalicylic acid , 99% , 50-78-2

Synonym(s):
O-Acetylsalicylic acid;2-Acetoxybenzoic acid;Acetylsalicylic acid;ASA;Aspirin

CAS NO.：50-78-2

Empirical Formula: C9H8O4

Molecular Weight: 180.16

MDL number: MFCD00002430

EINECS: 200-064-1

PRODUCT Properties

• Melting point: 134-136 °C (lit.)
• Boiling point: 272.96°C (rough estimate)
• Density: 1.35
• refractive index: 1.4500 (estimate)
• Flash point: 250 °C
• storage temp.: 2-8°C
• solubility: H₂O: 10 mg/mL at 37 °C
• form: crystalline
• color: white
• pka: 3.5(at 25℃)
• Water Solubility: 3.3 g/L (20 ºC)
• Merck: 14,851
• BRN: 779271
• Exposure limits: ACGIH: TWA 5 mg/m3; NIOSH: TWA 5 mg/m3
• BCS Class: 3
• Stability: Stable. Keep dry. Incompatible with strong oxidizing agents, strong bases, strong acids, various other compounds such as iodides, iron salts, quinine salts, etc.
• InChIKey: BSYNRYMUTXBXSQ-UHFFFAOYSA-N
• LogP: 1.190
• CAS DataBase Reference: 50-78-2(CAS DataBase Reference)
• NIST Chemistry Reference: Benzoic acid, 2-(acetyloxy)-(50-78-2)
• EPA Substance Registry System: Aspirin (50-78-2)

Description and Uses

Acetylsalicylic acid is a white crystalline powder commonly known by its common name as aspirin or ASA. Aspirin is the most widely used medication in the world.

Acetylsalicylic acid's original use as an analgesic, an antipyretic, and to reduce inflammation continues to this day. More recently there is some evidence that aspirin lessens the chance of heart attacks as a result of its effect as a blood "thinner."

Safety

• Symbol(GHS): GHS07
• Signal word: Warning
• Hazard statements: H302
• Precautionary statements: P264-P270-P301+P312-P501
• Hazard Codes: Xn
• Risk Statements: 22-36/37/38
• Safety Statements: 26-36/37/39
• OEB: B
• OEL: TWA: 5 mg/m3
• RIDADR: UN 1851
• WGK Germany: 1
• RTECS: VO0700000
• TSCA: Yes
• HazardClass: 6.1
• PackingGroup: III
• HS Code: 29182210
• Hazardous Substances Data: 50-78-2(Hazardous Substances Data)
• Toxicity: LD50 orally in mice, rats: 1.1, 1.5 g/kg (Hart)