MSDS Aspirin (Acetylsalicylic Acid) (C9H8O4) – Safety Data Sheet & GHS Hazards

Summary MSDS for Aspirin (Acetylsalicylic Acid) (C9H8O4), CAS 50-78-2: substance identity, GHS hazard classification, hazard and precautionary statements, and links to the manufacturer's official SDS.

TCI A2262 – Acetylsalicylic Acid

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TCI A2262 – Acetylsalicylic Acid

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Identity summary

Name Aspirin (Acetylsalicylic Acid)
Other names (IUPAC) Aspirin, 2-acetyloxybenzoic acid
Molecular formula C9H8O4
CAS number 50-78-2
Molar mass 180.16 g/mol
PubChem CID 2244

Molar mass of C9H8O4 and how to calculate it

The molar mass of C9H8O4 is 180.16 g/mol, the sum of the relative atomic masses of all atoms in the formula: 9 × 12.011 + 8 × 1.008 + 4 × 15.999 = 180.16 g/mol.

Element Atoms Atomic mass Contribution Mass %
C 9 12.011 108.10 60.00%
H 8 1.008 8.06 4.48%
O 4 15.999 64.00 35.52%

So 1 mol of C9H8O4 weighs 180.16 g, and 1 L of a 0.1 M solution needs 18.016 g of pure C9H8O4. For liquid or concentrated reagents, work from assay and density with the dilution formula. Calculate other compounds with the molar mass calculator.

Hazard identification (GHS)

Signal word: DANGER

Pictograms:

GHS06 – Acute toxicity
Acute toxicity
GHS08 – Health hazard
Health hazard

Meaning of all GHS hazard symbols

Hazard statements (H)

  • H301: Toxic if swallowed.
  • H319: Causes serious eye irritation.
  • H360: May damage fertility or the unborn child.
  • H371: May cause damage to organs.
  • H373: May cause damage to organs through prolonged or repeated exposure.
  • H334: May cause allergy or asthma symptoms or breathing difficulties if inhaled.

Precautionary statements (P)

Prevention

  • P260: Do not breathe dust.
  • P270: Do not eat, drink or smoke when using this product.
  • P202: Do not handle until all safety precautions have been read and understood.
  • P201: Obtain special instructions before use.
  • P264: Wash skin thoroughly after handling.
  • P280: Wear protective gloves/ protective clothing/ eye protection/ face protection.
  • P284: Wear respiratory protection.

Response

  • P342 + P311: If experiencing respiratory symptoms: Call a POISON CENTER/doctor.
  • P337 + P313: If eye irritation persists: Get medical advice/ attention.
  • P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P308 + P311: IF exposed or concerned: Call a POISON CENTER/doctor.
  • P304 + P340: IF INHALED: Remove person to fresh air and keep comfortable for breathing.
  • P301 + P310 + P330: IF SWALLOWED: Immediately call a POISON CENTER/doctor. Rinse mouth.

Storage

  • P405: Store locked up.

Disposal

  • P501: Dispose of contents/ container to an approved waste disposal plant.

The GHS classification above matches TCI (Tokyo Chemical Industry) official data for product A2262 Acetylsalicylic Acid. Substance identity from PubChem CID 2244.

Download the official SDS & CoA

The applicable Safety Data Sheet is the manufacturer's SDS for the product and lot you purchase. For products available from AMI Scientific:

TCI A2262 – Acetylsalicylic Acid Official SDS & CoA (TCI)
TCI A2262 – Acetylsalicylic Acid View product

SDS and lot-specific CoA are sent with the quotation/order or on request.

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What is an MSDS/SDS?

An MSDS (Material Safety Data Sheet), now called an SDS (Safety Data Sheet), is a 16-section document describing the hazards, handling, storage, first aid, and disposal of a chemical. Read the full MSDS guide and other MSDS pages.

This summary was compiled by AMI Scientific from TCI official GHS data for information purposes. Classification may differ by concentration, form, and supplier. Always refer to the manufacturer's official SDS for the product and lot you use. Updated: 06-11-2026.