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Names and Identifiers
Name Acetylsalicylic acid
Synonyms o-Acetylsalicylic acid 2-Acetoxybenzoic acid
2-Acetoxybenzoic acid
aspirin usp
Aspirin
Acetoxybenzoic acid
Metronidazolum
2-(acetyloxy)benzoic acid
2-(acetyloxy)benzoate
Acetyl Salicylic Acid
CAS 50-78-2
EINECS 200-064-1
InChI InChI=1/C9H8O4/c1-6(10)13-8-5-3-2-4-7(8)9(11)12/h2-5H,1H3,(H,11,12)/p-1

Physico-chemical Properties
Molecular Formula C9H8O4
Molar Mass 180.15 g/mol
Melting Point 136-140℃
Boling Point 321.4°C at 760 mmHg
Flash Point 131.1°C
Solubility 3.3 g/L (20℃)
Vapor Presure 0.000124mmHg at 25°C

Risk and Safety
Hazard Symbols Xn – Harmful
Harmful
Risk Codes R22 – Harmful if swallowed
R36/37/38 – Irritating to eyes, respiratory system and skin.
Safety Description S26 – In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S36/37/39 – Wear suitable protective clothing, gloves and eye/face protection.
UN IDs UN 1851

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CAS#50-78-2, Acetylsalicylic acid Aspirin, C9H8O4
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