Methyl aceto acetate, GR 99+

Name: Methyl aceto acetate, GR 99+
Brand: Vaqora Chemicals
SKU: VQ-008887

About Methyl aceto acetate, GR 99+

Methyl aceto acetate is an ester (AR grade) carrying the CAS registry number 105-45-3 at a purity of ≥99%. With the molecular formula C5H8O3, it has a molar mass of 116.11 g/mol. Its systematic (IUPAC) name is methyl 3-oxobutanoate. It is also known as 3-Oxobutanoic acid methyl ester or Acetoacetic acid methyl ester.

The product is provided as a liquid. Literature values give a melting point of −80 °C and a boiling point of 169-170 °C. Store in a cool, well-ventilated place, away from sources of ignition, with the container tightly sealed. Under GHS it is labelled “Warning”, so handle it with suitable PPE and consult the SDS.

It is commonly used for organic synthesis and API synthesis. It is used across pharmaceutical manufacturing and academic and industrial research.

Standard pack sizes are 500 mL, 5 L and 220 kg, and every batch ships with a Certificate of Analysis (COA) and we export worldwide.

Typical applications

Organic synthesis
API synthesis

Industries

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Methyl aceto acetate, GR 99+
Catalogue No.	VQ-008887
CAS Number	105-45-3
IUPAC name	methyl 3-oxobutanoate
Molecular formula	C₅H₈O₃
Molecular weight	116.11 g/mol
Exact mass	116.0473
Grade	AR
Purity / assay	≥99%
HSN code	29183040
InChIKey	WRQNANDWMGAFTP-UHFFFAOYSA-N
SMILES	CC(=O)CC(=O)OC
PubChem CID	7757

Physical properties
Physical form	Liquid
Appearance	Liquid
Melting point	−80 °C
Boiling point	169-170 °C
H-bond donors / acceptors	0 / 3
TPSA	43.4 Å²
Synonyms	3-Oxobutanoic acid methyl ester, Acetoacetic acid methyl ester, MAA, Methylacetoacetate, Methyl acetylacetate, Methyl 3-oxobutyrate, Methyl acetylacetonate, Butanoic acid, 3-oxo-, methyl ester, Acetoacetic methyl ester, 1-Methoxybutane-1,3-dione, Acetoacetic acid, methyl ester, Methylester kyseliny acetoctove

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

H319Causes serious eye irritation

Precautionary statements: P264 + P265, P280, P305 + P351 + P338, P337 + P317

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Other grades of CAS 105-45-3

Synthesis

Methyl aceto acetate, 99%

CAS: 105-45-3
Formula: C₅H₈O₃
MW: 116.11 g/mol

VQ-008886

Frequently asked questions

What is the CAS number of Methyl aceto acetate, GR 99+?

The CAS Registry Number of Methyl aceto acetate, GR 99+ is 105-45-3. It is also known as 3-Oxobutanoic acid methyl ester, Acetoacetic acid methyl ester, MAA.

What is the molecular formula and molecular weight of Methyl aceto acetate, GR 99+?

Methyl aceto acetate, GR 99+ has the molecular formula C5H8O3 and a molecular weight of 116.11 g/mol. Its IUPAC name is methyl 3-oxobutanoate.

Which grade and pack sizes of Methyl aceto acetate, GR 99+ can I order?

We supply Methyl aceto acetate, GR 99+ in AR (≥99%) grade, in 500 mL, 5 L, 220 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Methyl aceto acetate, GR 99+?

Yes. Every lot of Methyl aceto acetate, GR 99+ is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can Methyl aceto acetate, GR 99+ be shipped internationally?

Yes. Methyl aceto acetate, GR 99+ is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.