2-Methyl-1-propanol CAS 78-83-1 is a branched-chain primary alcohol extensively utilized as a solvent and chemical intermediate in industrial coating applications. Chemically defined as isobutanol, this flammable, colorless liquid serves as a latent solvent in nitrocellulose lacquers and a viscosity reducer in alkyd resin varnishes. The compound, also known as isobutyl alcohol, functions as a critical feedstock for the synthesis of isobutyl esters, plasticizers, and amino resin crosslinkers widely used in automotive paints. We provide competitive factory pricing and flexible options for customized specifications to meet specific solvent balance requirements. Our bulk supply includes complete regulatory support with MSDS, TDS, COA, ensuring full compliance for your manufacturing needs.
2‑Methyl‑1‑propanol CAS 78‑83‑1
- CAS: 78-83-1
- Synonyms: 2-Methyl-1-propanol, Isobutanol, Isobutyl alcohol, Isopropylcarbinol
- Einecs: 201-148-0
- Molecular Formula: C4H10O
- Grade: Industrial grade 99%
- Package: 200kg iron drum or 50kg plastic drum packaging
Product Description
Physicochemical Properties
| Parameter | Method |
| Appearance | Visual Inspection |
| Purity (GC) | Gas Chromatography |
| Color (Pt-Co) | Platinum-Cobalt Scale |
| Density (20°C) | Hydrometer |
| Water Content | Karl Fischer |
| Acidity (as Acetic Acid) | Titration |
| Distillation Range | Distillation |
| Non-volatile Matter | Gravimetric |
Applications
This versatile solvent and intermediate is widely applied across multiple industrial sectors:
Coatings & Solvents
- Lacquer Solvent: Acts as a latent solvent in nitrocellulose lacquers and a co-solvent in alkyd resin paints, improving flow and preventing blushing.
- Paint Thinners: Used to reduce viscosity in automotive topcoats and industrial maintenance coatings.
Chemical Synthesis
- Derivatives: The primary raw material for producing isobutyl acetate (solvent), isobutyl methacrylate (coating resin), and diisobutyl phthalate (DIBP plasticizer).
- Fuel Additives: utilized as an oxygenate additive in gasoline blending to reduce carbon monoxide emissions.
Extraction & Processing
- Extraction Agent: Used in the pharmaceutical industry for the extraction of antibiotics and hormones due to its specific solubility profile.
Quality Assurance (QA/QC)
To ensure downstream process stability, our quality control system enforces strict batch-to-batch consistency:
- Composition Analysis: Every lot is analyzed using Gas Chromatography (GC) to verify that the isomer content and purity meet the $\ge$ 99.5% standard.
- Moisture Control: Strictly controlled water content via Karl Fischer titration to prevent phase separation in solvent blends.
- System Compliance: Manufacturing and logistics are managed under ISO 9001:2015 and ISO 14001 certification standards.
Storage & Safety
Storage Conditions
- Flammability: Store in a dedicated flammable liquids storage area (Class 1B). Keep cool, dry, and well-ventilated.
- Grounding: Containers must be bonded and grounded during transfer to prevent static discharge ignition.
- Incompatibility: Keep separate from strong oxidizers, aluminum, and acid anhydrides.
Safety Handling & PPE
2-Methyl-1-propanol is Flammable and an Irritant.
- Ventilation: Use explosion-proof local exhaust ventilation to keep vapor concentrations below permissible exposure limits.
- Respiratory Protection: If limits are exceeded, use a full-face respirator with organic vapor cartridges.
- Skin & Eye Protection: Wear chemical-resistant gloves (Nitrile or Butyl rubber) and safety goggles. Avoid wearing contact lenses when handling this product.
- First Aid: If inhaled, move the person to fresh air. In case of eye contact, rinse cautiously with water for several minutes.
FAQ - Technical & Supply Chain
-
Q:
Does CAS 78-83-1 refer to the branched primary alcohol isomer distinct from n-Butanol?
A: Yes, this registry number specifically identifies 2-Methyl-1-propanol (Isobutanol), verifying its branched molecular structure. This distinction ensures the specific boiling point and reactivity profile required for applications where linear n-Butanol is not a suitable substitute. -
Q:
What role does this material typically serve in nitrocellulose and alkyd resin systems?
A: In industrial coating formulations, this product functions primarily as a latent solvent or viscosity reducer. It is intended to prevent blushing, improve flow, and regulate the evaporation rate when combined with active solvents in lacquer and varnish systems.
Documents and Product Support
For product review and sourcing evaluation, supporting documents can be coordinated according to the product type, inquiry stage, and order requirements.
- COA for batch-based quality reference
- TDS for key physical and chemical information
- SDS / MSDS for handling, storage, and safety reference
- Packing information for sample, trial, and bulk orders
- Technical communication based on application and specification requirements
Information to Confirm Before Quotation
Clear sourcing information helps reduce specification mismatch and allows a more accurate quotation before sample or bulk order discussion.
- Product name and CAS number
- Application or intended end use
- Required purity, grade, or specification
- Sample quantity, trial order, or bulk demand
- Preferred packing form or net weight
- Destination country or port
- Required documents or compliance expectations
Packaging, Storage, and Handling Notes
Packaging form, storage conditions, shelf life, and shipment arrangements should be confirmed according to the product characteristics, package size, and destination requirements.
Before order confirmation, buyers are advised to review the corresponding product documents and confirm whether any special storage, labeling, or handling requirements apply.
Sample, Bulk Order and Repeat Supply Support
Support can be arranged for sample discussion, bulk supply planning, packaging confirmation, and routine sourcing communication based on the actual product and order requirements.
For repeat-use formulations or long-term procurement plans, buyers may discuss specification consistency, packaging preferences, delivery expectations, and document coordination in advance.
