3-Methylvaleric Acid, CAS 105-43-1, is a branched-chain C6 carboxylic acid, also called 3-Methylpentanoic Acid. Before an RFQ, confirm: the exact isomer identity, required physical form or analytical limits, and intended technical process; quantity, packaging, destination and document availability.
3-Methylvaleric Acid CAS 105-43-1
- CAS: 105-43-1
- Synonyms: 3-Methylvaleric Acid; 3-Methylpentanoic Acid; beta-Methylvaleric Acid
- Einecs: 203-297-7
- Molecular Formula: C₆H₁₂O₂
- Grade: Confirm current product specification
- Package: Confirm packaging for the offered form
Product Description
Identity and procurement review
| Field | Current product-specific specification |
| Chemical identity | 3-Methylvaleric Acid; CAS 105-43-1 |
| Molecular formula | C₆H₁₂O₂ |
| Molar mass | 116.16 g/mol |
| Offered physical form | Confirm the offered physical form in the current product-specific specification. |
| Grade and assay | Confirm the required value in the current product-specific specification. |
| Impurity limits | Confirm the required value in the current product-specific specification. |
| Physical data | Confirm the required value in the current product-specific specification. |
| Packaging | Confirm packaging compatible with the offered form and destination requirements. |
Application boundary
3-Methylvaleric Acid is a branched-chain C6 carboxylic acid, also called 3-Methylpentanoic Acid. It must be distinguished from 2-Methylvaleric Acid and straight-chain Hexanoic Acid; a generic isovaleric-acid label is not precise enough.
- 3-Methylvaleric Acid is a branched-chain C6 carboxylic acid, also called 3-Methylpentanoic Acid. It must be distinguished from 2-Methylvaleric Acid and straight-chain Hexanoic Acid; a generic isovaleric-acid label is not precise enough.
- Confirm the offered physical form in the current product-specific specification.
- Confirm the required value in the current product-specific specification.
- In the RFQ, state: the exact isomer identity, required physical form or analytical limits, and intended technical process; quantity, packaging, destination and required documents.
Procurement information
In the RFQ, state: the exact isomer identity, required physical form or analytical limits, and intended technical process; quantity, packaging, destination and required documents.
- Request current product-specific specifications, packaging details and document availability.
- Confirm packaging compatible with the offered form and destination requirements.
- State the required form, quantity, intended use, packaging, destination and document needs in the RFQ.
- Confirm the required value in the current product-specific specification.
Handling and safety review
Storage review
Use the current product-specific SDS and specification to review handling, storage and local regulatory suitability.
Safety review
- Use the current product-specific SDS and specification to review handling, storage and local regulatory suitability.
- Request current product-specific specifications, packaging details and document availability.
- State the required form, quantity, intended use, packaging, destination and document needs in the RFQ.
- Confirm the required value in the current product-specific specification.

FAQ - Technical & Supply Chain
-
Q:
How should 3-Methylvaleric Acid be distinguished from other C6 carboxylic-acid isomers?
A: Use 3-Methylvaleric Acid or 3-Methylpentanoic Acid with CAS 105-43-1. It is not 2-Methylvaleric Acid, 4-Methylvaleric Acid, Hexanoic Acid or Isovaleric Acid; those isomers have different CAS numbers and physical profiles. Put the CAS number and full positional name on the order. -
Q:
What is 3-Methylvaleric Acid used for?
A: It is used as a branched C6 carboxylic-acid building block for esters, flavors, fragrances, pharmaceuticals, agrochemicals and specialty surfactants. The branched structure can modify volatility, solubility and hydrolytic stability compared with straight-chain hexanoic acid. -
Q:
Which specification and delivery details should be agreed for 3-Methylvaleric Acid?
A: Agree GC assay and isomer profile, water, color, acidity or acid value, density, refractive index and any high-boiling residue with the methods. Confirm the offered package, net quantity, compatible closure, transport classification, manufacturing date and storage conditions. -
Q:
What should be confirmed about the offered physical form?
A: Confirm whether the material is supplied as liquid, low-melting solid or another form, and check the corresponding packaging, heating or transfer requirements. 3-Methylvaleric Acid should be stored in closed, corrosion-resistant containers away from moisture and incompatible oxidizers. -
Q:
What are the typical physical properties of 3-Methylvaleric Acid?
A: 3-Methylvaleric Acid is usually a liquid at room temperature, with boiling point around 196-198 C, density about 0.93 g/mL and flash point near 85 C. Compare offered lot data against the agreed specification and confirm whether temperature control is needed for shipping.
Ordering & Documentation
Key information for document requests, quotations, and supply planning.
Documents
COA, TDS, SDS/MSDS and packing details are available on request.
Quotation
Send the CAS number, grade, quantity, packing preference and destination.
Sample & Supply
Support is available for samples, trial orders, bulk and repeat supply.
Storage & Shipping
Product-specific conditions are confirmed before order.

