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CAS 594-19-4 Tert-Butyllithium Solid
Overview
Tert-Butyllithium (t-BuLi, CAS 594-19-4, C₄H₉Li) is a pyrophoric superbase supplied as 1.6–2.5 M solutions (hexanes/pentane/heptane). Uses: rapid deprotonation/DoM, lithium–halogen exchange, select anionic polymerizations. Lots are titration-verified with low moisture (COA/TDS). Handle strictly anhydrous under inert gas—ignites on contact with air/water. Custom concentrations and packaging available.
Product Description
CAS 594-19-4 Tert-Butyllithium Solid
Tert-Butyllithium (t-BuLi, CAS 594-19-4, C₄H₉Li) is a powerful, sterically hindered organolithium reagent widely used in fine chemicals, pharmaceuticals, polymer synthesis, and materials research. As a superbase and selective metalating agent, it drives rapid deprotonation, directed ortho-metalation (DoM), and lithium–halogen exchange, and can initiate living anionic polymerizations, enabling clean, high-yield route design and late-stage functionalization. Typically supplied as 1.6–2.5 M hydrocarbon solutions, its high basicity, reduced nucleophilicity, and fast kinetics deliver precise transformations when handled under strictly anhydrous, oxygen-free conditions.
Tert-Butyllithium (t-BuLi) — Product Specification
Chemical name: Tert-Butyllithium (in Pentane / Heptane)
CAS: 594-19-4 |
Formula: C4H9Li |
Structure: (CH3)3CLi
Identity & Form
| Appearance | Colorless to pale yellow clear liquid |
|---|---|
| Solvents Available |
1. Pentane (Standard for easy removal) 2. Heptane (Higher stability option) |
| Application | Extremely strong base and lithiating agent. Used for lithium-halogen exchange and deprotonation where n-BuLi is ineffective. |
Typical Specification (1.7 M Solution)
| Molarity | 1.6 M – 1.8 M (Typical 1.7 M) |
|---|---|
| Active Content (wt%) | 15% – 18% (Depending on solvent density) |
| Active Lithium | ≥ 96.0% of Total Lithium |
| Free Alkalinity | ≤ 0.4% (Low impurity profile) |
| Residual Chloride (Cl) | ≤ 0.05% |
| Density @20°C |
~ 0.65 g/mL (in Pentane) ~ 0.70 g/mL (in Heptane) |
Handling & Packaging
| UN Class | Class 4.2 (Pyrophoric Liquid, Organic, N.O.S.) |
|---|---|
| Packaging |
1. Sample: 100ml - 1L Glass bottles with Sure/Seal™ septa. 2. Bulk: Stainless steel cylinders / Iso-Tanks equipped for inert gas transfer. |
| Storage Condition | Refrigerated (< 10°C recommended) under Nitrogen or Argon atmosphere. |
© Shandong Yinglang Chemical CO., LTD · High-purity Organolithium Specialist.
PACKING AND DELIVERY
Packing and delivery
We offer secure and compliant packaging for a wide range of chemical products, from laboratory bottles (100 mL, 250 mL, 500 mL) to customized bulk containers. All shipments follow international hazardous goods standards and include complete documentation such as COA and SDS. With reliable global logistics partners, we ensure safe, fast, and efficient delivery by air, sea, or land according to customer needs.