carbon tetrachloride reagent hplc

It is critically important to clarify a fundamental chemical incompatibility first:

Carbon Tetrachloride ($CCl_4$) is NOT used as a solvent in High-Performance Liquid Chromatography (HPLC).

In fact, it is strictly prohibited in modern HPLC laboratories for the following reasons:

1. High UV Absorption: Carbon tetrachloride has a very low UV cutoff wavelength (absorbs strongly below ~240 nm) and high viscosity, making it transparent only in a narrow range. More importantly, it is non-polar and incompatible with most HPLC stationary phases and detectors.
2. Detector Interference: It interferes severely with UV-Vis, RI (Refractive Index), and especially MS (Mass Spectrometry) detectors due to high background noise and fragmentation.
3. Safety & Environmental Bans: Carbon tetrachloride is a known carcinogen, hepatotoxin, and ozone-depleting substance. Its use is heavily restricted or banned under international agreements (e.g., Montreal Protocol) and safety standards (OSHA, EPA).
4. Material Compatibility: It can degrade certain seals and tubing in HPLC systems.

✅ What You Likely Meant:

You probably need HPLC-grade solvents that are used in non-polar or reverse-phase HPLC. The most common solvents for such applications are:

📌 If You Need Carbon Tetrachloride for Other Purposes (NOT HPLC):

• Historical use: Formerly used as a solvent in gravimetric analysis or for dissolving non-polar compounds.
• Modern alternative: Use dichloromethane (DCM) or chloroform for non-polar extractions, but never for HPLC.

🌐 HS Code & Tax Classification (For Import/Export Purposes)

If you are importing Carbon Tetrachloride as a reagent (not for HPLC), here is the correct classification:

🖥️ Carbon Tetrachloride (Reagent Grade)

🌐 HS Code Reference & Customs Guidance | 2026 Classification
📌 Product Definition:
Carbon tetrachloride ($CCl_4$) is a halogenated organic compound, historically used as a solvent, degreaser, and chemical intermediate. As a reagent, it is classified under Chapter 29 (Organic Chemicals).

📦 HS Code Classification (2026 Harmonized System)

⚠️ Key Note:
- Carbon tetrachloride is strictly regulated under environmental laws. Import may require EPA permit or equivalent national environmental clearance. - Many countries ban or restrict its import due to ozone depletion and toxicity.

💰 Tariff & Tax Details (Example: United States)

🎯 HS Code: 2903.30.00 – Halogenated Hydrocarbons

📌 Legal Basis:
- HTSUS: 2903.30.00
- Section 301: USITC Footnote 4
- EPA Reporting Requirements

🛠️ Customs Clearance Recommendations

✅ Required Documentation

✅ Declaration Tips

• HS Code: 2903.30.00
• Description: "Carbon Tetrachloride, Reagent Grade, for Laboratory Use Only"
• Do NOT declare as HPLC solvent – it will be rejected or delayed.

⚠️ Critical Warnings

• Not for HPLC: Using $CCl_4$ in HPLC will damage your instrument and invalidate results.
• Regulatory Risk: Many countries ban import of $CCl_4$. Check local environmental laws.
• Safety: Handle in fume hood, wear PPE. It is carcinogenic and toxic.

🌍 Global Market Comparison (2026)

📌 Final Recommendation

❌ Do NOT use Carbon Tetrachloride in HPLC.
✅ Use HPLC-grade Methanol, Acetonitrile, or Hexane instead.
✅ If importing $CCl_4$ for non-HPLC use, ensure full environmental compliance and declare correctly under 2903.30.00.

For HPLC applications, consult your method development guide for HPLC-grade solvents only.