Industrial chemicals · Taylor, TXTechnical Data Sheet
Isobutyl Alcohol 99% ACS Grade
ACS Grade · 99%
Identity & Composition
- Product Name
- Isobutyl Alcohol 99% ACS Grade
- Alliance Code
- isobutyl-alcohol-99-acs-grade
- Grade
- ACS Grade
- Concentration
- 99%
- CAS Number
- 78-83-1PubChem
- Formula
- C4H10OPubChem
- Molecular Weight
- 74.12PubChem
- Product Type
- solution
Specifications
| Test | Specification | Typical | Method | Source |
|---|---|---|---|---|
| Assay (2-methyl-1-propanol) | 99.0 % Min | 99.0 % | Gas chromatography | ACS Reagent Chemicals |
| Titrable acid | 0.0005 meq/g Max | 0.0001 meq/g | Titration with standard base | ACS Reagent Chemicals |
| Alkalinity | 0.0005 meq/g | 0.00002 meq/g | Titration with standard acid | Supplier specification |
| Identity | IR passes test | Passes test | Infrared spectroscopy | Supplier specification |
| Isobutanal (G.C.) | 0.05% | 0.002% | Gas chromatography | Supplier specification |
| Peroxides (as H2O2) | 0.001% | 0.0001% | Colorimetric peroxide test | Supplier specification |
| Residue after evaporation (non-volatile matter) | 0.001 % Max | 0.0002 % | Evaporation to dryness and gravimetric determination | ACS Reagent Chemicals |
| Insoluble matter in water (solubility in water) | passes test | Passes test | Visual examination of aqueous dilution | Supplier specification |
| Substances darkened by sulfuric acid | passes test | Passes test | Sulfuric acid darkening test | Supplier specification |
| Water (H2O) | 0.1 % Max | 0.03 % | Karl Fischer | ACS Reagent Chemicals |
| Carbonyl compounds (as butyraldehyde) | 0.01 % Max | 0.003 % | Gas chromatography | ACS Reagent Chemicals |
Specification values are guaranteed limits. Typical values are representative of production lots and are not guaranteed. Lot-specific certificates of analysis ship with every order.
Available GradesSame CAS, alternate grades and concentrations
| Grade | Concentration | Typical Assay | SKU | TDS |
|---|---|---|---|---|
| This grade ACS Grade | 99% | — | current | current |
| — | 99% | — | isobutyl-alcohol-99 | View TDS → |
Typical assay shown is the rolling-window mean from the sibling product's most recent lots. Grade selection drives downstream end-use — verify the sibling grade matches your specification before substitution.
Physical & Chemical Properties
One or more physical-property values are temporarily suppressed pending verification against vendor COA data. For complete properties refer to the Safety Data Sheet (SDS) or contact sales@alliancechemical.com.
| Property | Value | Source |
|---|---|---|
| Form | Liquid | Published reference |
| Color | 10 Max | ACS Reagent Chemicals |
| Odor | Sweet, musty odor | Published reference |
| Density | 0.801-0.802 | Supplier specification |
| Boiling Point | 107-109°C | Supplier specification |
| Melting Point | -162 °F (NTP, 1992) | Published reference |
| Flash Point | 82 °F (NTP, 1992) | Published reference |
| Vapor Pressure | 10 mmHg at 71.1 °F ; 9 mmHg at 68 °F (NTP, 1992) | Published reference |
| Solubility (water) | 50 to 100 mg/mL at 61 °F (NTP, 1992) | Published reference |
| Refractive Index (nD 20) | 1.397-1.399 | Supplier specification |
Polar solvent — purity vs. intended end-use (electronics, pharma, general industrial) is the dominant grade consideration. See application guidance for grade selection.
Materials of Construction
| Material | Rating | Conditions | Source |
|---|---|---|---|
| Steel (railway tank cars, tank containers, road tankers) | Compatible | Loading and transport of isobutanol as supplied (product spec on the same page: Isobutanol >99.8 %); no temperature or concentration limit stated | grupaazoty.com |
Compatibility is drawn from published manufacturer and supplier documentation for this product; each rating is sourced. Confirm against your specific duty cycle before equipment selection.
Materials Selection Tool
Showing 13 of 13 materials compatible at the selected envelope.
| Material | Rating | Max T (°C) | Notes |
|---|---|---|---|
Buna-N (NBR) elastomer | Fair | 60 | Acceptable for alcohols; poor for ketones. |
EPDM elastomer | Fair | — | Good for alcohols, poor for esters |
Viton (FKM) elastomer | Fair | 80 | Swells in acetone and esters; avoid for those. |
FFKM (Kalrez) fluoropolymer | Excellent | 200 | Premium ester / ketone sealing |
PTFE fluoropolymer | Excellent | 200 | Universal solvent compatibility. |
Borosilicate Glass glass ceramic | Excellent | 100 | Universally inert. |
Glass (borosilicate) glass ceramic | Excellent | 100 | Inert |
316L Stainless Steel metal | Excellent | 80 | Inert; preferred for high-purity solvent service. |
Aluminium metal | Good | 40 | Acceptable; avoid prolonged wet contact |
Carbon Steel metal | Fair | 50 | Trace moisture causes rust; flash-rust prevention required. |
HDPE thermoplastic | Fair | 40 | Swells with many polar solvents; verify per solvent. |
PP thermoplastic | Good | 50 | Acceptable but watch swelling with esters |
PVC thermoplastic | Fair | 25 | Esters soften PVC; avoid for esters |
Regulatory & Transport
DOT / 49 CFR
- UN Number
- UN121249 CFR 172.101
- Hazard Class
- 3Adjudicated
- Packing Group
- IIIAdjudicated
- Proper Shipping Name
- Isobutanol or isobutyl alcoholAdjudicated
GHS / OSHA HazCom 2012
- Signal Word
- DangerAdjudicated
- H-Codes (Hazard Statements)
- H226, H315, H318, H335, H336Adjudicated
- P-Codes (Precautionary Statements)
- P210, P233, P240, P241, P242, P243, P261, P264, P271, P280, P302+P352, P303+P361+P353, P304+P340, P305+P351+P338, P313, P314, P321, P332+P313, P362, P370+P378, P403+P233, P403+P235, P405, P501Adjudicated
Occupational Exposure Limits
- OSHA PEL (29 CFR 1910.1000)
- —no canonical
- ACGIH TLV
- —no canonical
- NIOSH REL
- —no canonical
- NIOSH IDLH
- —no canonical
Transport descriptions reflect 49 CFR 172.101 lookup at time of publication. Sourced data: ECHA CLP Annex VI for harmonised classifications, NIOSH Pocket Guide for REL/IDLH, OSHA Z-Tables for PEL. Always verify against the latest regulatory text before shipment-critical decisions.
Supplier Qualification Packet
One zipped download containing the TDS, SDS, latest lot COA (when available), and a fresh Letter of Continuing Guaranty for Isobutyl Alcohol 99% ACS Grade. Every file included is SHA-256 hashed and listed in a manifest your QA team can audit.
Applications
- Analytical reagent for laboratory analysis, meeting ACS specifications and USP / Ph. Eur. reagent requirements.itwreagents.com
- Sold for research use only, restricted to qualified laboratories and businesses.chemsavers.com
- Used in organic synthesis, as a chemical intermediate, and as a solvent in coating applications.productcatalog.eastman.com
- Used in the production of esters, paints and lacquers (as solvent and flow/viscosity modifier), plasticizer additives for plastics, and melamine and carbamide resins.grupaazoty.com
Applications are drawn from published manufacturer and supplier documentation; each is sourced. Suitability for a specific use is the buyer's to confirm.
Storage & Handling
- Recommended Storage
- Storage: Room Temperature.itwreagents.com
- Handling Precautions
- Use chemical-resistant gloves and splash goggles. Bond and ground during transfer to prevent static accumulation. Eliminate ignition sources within vapor envelope.Class-level guidance — not product-specific; the SDS controls.
- Incompatibilities
- Strong oxidizers, strong acids, isocyanates, anhydrides. Hygroscopic — protect from atmospheric moisture for water-sensitive end uses.Class-level guidance — not product-specific; the SDS controls.
- Shelf Life
- Consult Technical Services for product-specific shelf life
For full hazard, PPE, and emergency response guidance, refer to the Safety Data Sheet (SDS) for this product. The SDS controls in all cases where guidance differs.
Packaging & Logistics
Shipping Description (US DOT)
UN1212, Isobutanol or isobutyl alcohol, 3, PG III
Sourced from 49 CFR 172.101. Confirm against shipping documents and carrier requirements before tender.
Revision History
Last reviewed 2026-07-17 by Andre Taki, DOT Hazmat Specialist.
| Version | Date | Change | Trigger |
|---|---|---|---|
| 1.3 | 2026-08-05 | Canonical data updated: 1 field changed via the provenance/adjudication pipeline.
| canonical_change |
| 1.2 | 2026-07-22 | Canonical data updated: 2 fields changed via the provenance/adjudication pipeline.
| canonical_change |
| 1.1 | 2026-07-17 | Canonical data re-verified: 5 fields updated against independent vendor SDSs, CLP Annex VI, 49 CFR, and OSHA HazCom 2024 (GHS classification, hazard/precautionary codes, signal word, physical properties as applicable).
| canonical_change |
| 1.0 | 2026-05-20 | Initial URL-first TDS published from canonical chemistry registry. | initial |
This Technical Data Sheet is provided for technical reference. The Safety Data Sheet (SDS) controls in all cases where guidance differs. Values reflect Alliance Chemical canonical data at time of generation; subsequent revisions are recorded in the Revision History above.