Acetic acid-12C2
Acetic acid-12C2 (CAS 1173022-32-6) is the carbon-12 labelled, 13C-depleted form of glacial acetic acid, with the formula 12CH3 12CO2H and a molecular weight of about 60.03 g/mol. Supplied at 99.9 atom % 12C isotopic purity, it is a colourless, corrosive, flammable liquid used chiefly as a stable-isotope reference and tracer reagent in NMR, mass spectrometry and isotope-ratio studies. Tech Serve Solutions supplies it as a research-grade stable isotope.
- Synonyms
- Acetic acid-12C2Acetic acid (12C2)Carbon-12 acetic acid13C-depleted acetic acid(12C2)acetic acidEthanoic acid-12C212CH3 12CO2H

Stable-isotope reference standard
Its high 12C isotopic purity (99.9 atom % 12C) makes it a useful 13C-depleted reference material for isotope-ratio mass spectrometry and for calibrating natural-abundance measurements.
NMR and mass spectrometry research
The defined isotopic composition supports method development and signal-assignment work in 13C NMR and MS, where a 13C-depleted acetic acid provides a controlled comparison against labelled or natural-abundance material.
Isotopic tracer studies
As an isotopically modified acetic acid, it can serve as a tracer in metabolic, mechanistic and reaction-pathway investigations that follow carbon through a system. Specific protocols should be validated by the user.
Synthetic and reagent chemistry
It retains the chemistry of glacial acetic acid and can act as a building block, acidulant or solvent in small-scale isotope-labelling synthesis and general organic-acid reactions where a defined 12C content is required.
| Molecular weight | 60.03 |
|---|---|
| Linear formula | 12CH312CO2H |
| Boiling point | 117-118 °C(lit.) |
| Density | 1.049 g/mL at 25 °C |
| Melting point | 16.2 °C(lit.) |


Hazard statements
- H226Flammable liquid and vapour
- H314Causes severe skin burns and eye damage
Precautionary statements
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
- P310Immediately call a POISON CENTER or doctor
| Flash point | 40 °C / 104 °F |
|---|---|
| Transport (UN / ADR) | UN 2789 8/PG 2 |
| Water hazard class (WGK, DE) | 1 |
| Hazard codes (EU) | C |
| Risk statements (R) | 10-35 |
| Safety statements (S) | 23-26-45 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
| Description | 13C-depleted |
|---|---|
| Isotopic Purity | 99.9 atom % 12C |
| Mol Wt | mol wt 60.05 by atom % calculation |
| Mass Shift | depleted |
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Acetic acid-12C2 used for?
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It is used mainly as a 13C-depleted stable-isotope reference and tracer reagent in NMR, mass spectrometry and isotope-ratio research, and as a defined-isotope acetic acid for small-scale synthetic and labelling chemistry. It otherwise behaves like glacial acetic acid.
What is the CAS number and molecular formula of Acetic acid-12C2?
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The CAS number is 1173022-32-6 and the molecular formula is 12CH3 12CO2H (carbon-12 labelled acetic acid). Its molecular weight is approximately 60.03 g/mol, with the EC number 200-580-7.
What grade and purity does Tech Serve Solutions supply?
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We supply Acetic acid-12C2 as a research-grade stable isotope at 99.9 atom % 12C isotopic purity (13C-depleted). We do not represent it as a USP, BP or EP pharmacopoeia grade. A certificate of analysis can accompany each consignment.
What are the safety and handling requirements for Acetic acid-12C2?
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It is classified Danger: a flammable liquid and vapour (H226) that causes severe skin burns and eye damage (H314), carrying GHS02 and GHS05 pictograms. Handle with chemical-resistant gloves and eye protection, keep away from ignition sources, and on skin or eye contact rinse cautiously with water and seek medical attention. The flash point is about 40 C.
Is Acetic acid-12C2 a controlled or scheduled substance?
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The supplied data shows no drug-control or scheduling designation for this product. It is, however, a Class 8 corrosive for transport (UN 2789, packing group II) and a German water-hazard class WGK 1 substance, so standard dangerous-goods and environmental handling rules apply.
How is Acetic acid-12C2 packed, shipped and exported?
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It is packed in suitable corrosion-resistant, sealed containers and shipped as UN 2789, Class 8, packing group II dangerous goods with the required ADR and IATA/IMDG documentation. As a long-standing exporter, Tech Serve Solutions arranges compliant labelling, SDS and export paperwork worldwide.
How do I request a sample or quote?
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Contact Tech Serve Solutions with your required pack size, quantity and destination, and our team will respond with availability, lead time and a formal quotation. Sample requests are considered subject to availability and applicable dangerous-goods shipping rules.
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