Acetaminophen

Basic Information

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CAS Number

103-90-2

Molecular Formula

C8H9NO2

Molecular Weight

151.17 g/mol

Chemical Classification

Basic Chemical Raw Materials Organic Chemicals Carboxylic Acids

Fine Chemicals Dyes and Pigments Organic Dyes

Basic Physical Properties

Physical State

Powder

Melting Point

168.0 to 172.0 deg-C

Boiling Point

273.17°C (rough estimate)

Water Solubility

14 g/L (20 ºC)

Flash Point

11 °C

Solubility

ethanol: soluble0.5M, clear, colorless

Refractive Index

1.5810 (rough estimate)

Vapor Pressure

0.0±0.9 mmHg at 25°C

SMILES

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CC(=O)Nc1ccc(O)cc1

InChI

InChI=1S/C8H9NO2/c1-6(10)9-7-2-4-8(11)5-3-7/h2-5,11H,1H3,(H,9,10)

InChIKey

RZVAJINKPMORJF-UHFFFAOYSA-N

LogP

1.3505999999999998

Topological Polar Surface Area

49.33 Å²

Hydrogen Bond Donor/Acceptor

2 / 3

Complexity

139

Safety Information

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GHS Hazard Pictograms

H302

H315

H319

H335

Hazard Statement

H302 Harmful if swallowed
Acute toxicity, oral

H315 Causes skin irritation
Skin corrosion/irritation

H319 Causes serious eye irritation
Serious eye damage/eye irritation

H335 May cause respiratory irritation
Specific target organ toxicity, single exposure; Respiratory tract irritation

Hazard Class

Class 9 Class 9

Sensitiveness

photosensitive

Explosive Limit

15%(V)

Toxicity

LD50 in mice (mg/kg): 338 orally (Starmer), 500 i.p. (Dahlin, Nelson)

Synonyms & References

English

4-Acetamidophenol
acetaminophen
4-(ACETYLAMINO)PHENOL
4'-HYDROXYACETANILIDE
4-HYDROXYACETANILIDE
ACETYL-P-AMINOPHENOL
APAP
N-(4-HYDROXYPHENYL)ACETAMIDE
N-ACETYL-4-AMINOPHENOL
N-ACETYL-P-AMINOPHENOL
P-ACETAMIDOPHENOL
P-ACETAMINOPHENOL
PARACETAMOL
P-HYDROXYACETANILIDE
RARECHEM AB PP 0382
TYLENOL
4'-Hydroxyacetanilide, paracetamol
Acetaminophen NEW
Acetaminophen solution
ACETAMINOPHEN(P)
ACETAMINOPHEN(RG)
Paracetamol (Acetaminophen)
4-Acetamino phenol
Acetaminophenol
Dirox
Dypap
Exdol
Fevor
G 1
Hedex
Korum

MDL Number

MFCD00002328

Customs Code

29242930

FAQ

What is Acetaminophen (CAS: 103-90-2)?

Acetaminophen, also known as paracetamol, is a widely used medication with the chemical formula C8H9NO2. It is a white crystalline solid with a mild aromatic odor. Commonly used as an analgesic and antipyretic, acetaminophen is known for its safety profile when used as directed. It is available in various formulations, including tablets, liquids, and capsules, and is often used for mild to moderate pain and fever relief.

What are the main uses of Acetaminophen (CAS: 103-90-2)?

Acetaminophen is primarily used as a pain reliever and fever reducer. It is commonly found in over-the-counter medications for headaches, muscle aches, colds, and sore throats. Its mild gastrointestinal side effects make it a preferred option for many patients. In addition to its pharmaceutical use, acetaminophen is used in research and industrial applications, including as a precursor in the synthesis of other compounds.

Is Acetaminophen (CAS: 103-90-2) safe?

Acetaminophen is generally safe when taken at recommended doses. However, it can cause liver damage if overdosed or misused. It is important to follow dosage guidelines and consult a healthcare professional. Proper handling and storage are essential to maintain its efficacy and safety. In industrial settings, it should be treated with caution due to potential chemical hazards.

How should Acetaminophen (CAS: 103-90-2) be stored?

Acetaminophen should be stored in a cool, dry place away from direct light. It is stable under normal conditions but may degrade if exposed to high humidity or temperatures. Keep it in a sealed container to prevent moisture absorption. Always store it out of reach of children to ensure safety. Proper storage helps maintain its quality and effectiveness over time.