Methanol Hplc Gradient Grade Qualigens

Methanol Hplc Gradient Grade Qualigens Specification

CAS No
67-56-1

Usage
Analytical reagent for HPLC and spectrophotometry

Melting Point
-98 C

Packaging Type
Sealed bottle or glass container

Boiling point
64.7 C

Size
Typically available in 2.5L, 5L bottles

Storage Instructions
Store in a cool, dry, well-ventilated area, away from heat and ignition sources.

Molecular Formula
CH3OH

Physical State
Liquid

Purity
>= 99.9%

Density
0.793 Gram per cubic centimeter(g/cm3)

Molecular Weight
32.04 g/mol

Shelf Life
36 months

Flash Point
11 C (closed cup)

Grade
HPLC Gradient Grade

Type
Solvent

Application
HPLC (High Performance Liquid Chromatography)

Appearance
Clear, colourless liquid

Purity(%)
>99.9

Evaporation Rate
5.9 (butyl acetate = 1)

Refractive Index (n20/D)
1.328 - 1.330

Acidity (as CH3COOH)
0.0005 meq/g

Heavy Metals (as Pb)
0.1 mg/kg

UV Absorbance (at 254 nm)
0.3

Residue After Evaporation
1.0 mg/L

Water Content
0.05%

Filter through 0.2 micron
Yes

Odor
Characteristic, slightly alcoholic

Alkalinity (as NH3)
0.0002 meq/g

Methanol Hplc Gradient Grade Qualigens Trade Information

Minimum Order Quantity
1 Bottle

FOB Port
JAIPUR

Payment Terms
Cash Advance (CA), Cash in Advance (CID), Telegraphic Transfer (T/T)

Supply Ability
100 Bottles Per Day

Delivery Time
7 Days

Sample Policy
Contact us for information regarding our sample policy

Main Export Market(s)
Asia, Australia, Central America, North America, South America, Eastern Europe, Western Europe, Middle East, Africa

Main Domestic Market
All India

About Methanol Hplc Gradient Grade Qualigens

Qualigens Methanol HPLC Gradient Grade is a super-pure methanol solvent (>99.9%) optimized for High-Performance Liquid Chromatography, featuring minimal UV absorbance, low residue, and controlled acidity/alkalinity, ensuring stable baselines and reliable results for sensitive gradient analyses in pharma/biotech by preventing ghost peaks and system contamination. Key Features & Specifications (Typical)

Purity (Assay): $ge$99.9% (by Gas Chromatography).
Appearance: Clear, colorless liquid with characteristic odor.
UV Absorbance: Extremely low, especially at lower wavelengths (e.g., 205nm, 225nm) to avoid interfering with UV detectors.
Residue on Evaporation: Very low (e.g., $le$0.0005%) to prevent contamination.
Acidity/Alkalinity: Controlled (e.g., <0.001% as HCl, <0.0003% as NaOH) for system stability.
Water Content: Low, controlled (e.g., <0.05% by Karl Fischer).
Gradient Suitability: Specifically tested to show minimal baseline noise and small impurity peaks during gradient elution.

Why "Gradient Grade"?

Gradient Elution: In HPLC, the mobile phase composition changes over time (gradient). Standard solvents might contain impurities that show up as peaks during these changes.
Clean Background: Gradient grade solvents are purified and tested to provide a "noise-free baseline" and "minimum drift," crucial for complex separations where minor impurities would otherwise mimic or obscure real sample peaks.

Applications

Mobile phase in reversed-phase and normal-phase HPLC.
Used in pharmaceutical, biotechnology, and chemical industries for quality control and research.

Exceptional Purity for Analytical Precision

Methanol HPLC Gradient Grade from Qualigens boasts a minimum purity of 99.9% and an exceptionally low water content, ensuring optimal results in analytical applications. Its low residue and strict control of UV absorbance make it ideal for sensitive HPLC procedures, minimizing interference and delivering consistent performance batch after batch.

Safe Packaging and Storage

This solvent is packaged in sealed bottles or glass containers, safeguarding its quality during transport and storage. For maximum shelf life and safety, store it in a cool, dry, and well-ventilated area away from heat sources and ignition. Proper storage ensures the solvent's integrity and extends usability throughout its 36-month lifespan.

Versatility in Analytical Laboratories

Qualigens Methanol HPLC Gradient Grade is suited for both HPLC and spectrophotometry, making it a valued reagent for research and quality control labs. Its rapid evaporation rate and very low levels of contaminants help laboratories achieve reproducible and accurate results when analyzing a wide array of samples.

FAQ's of Methanol Hplc Gradient Grade Qualigens:

Q: How should Methanol HPLC Gradient Grade Qualigens be stored to maintain its quality?

A: Store Methanol HPLC Gradient Grade in a cool, dry, and well-ventilated area away from heat and ignition sources. Ensure the container is tightly sealed to avoid contamination and evaporation, which preserves its high purity and performance over a shelf life of up to 36 months.

Q: What are the benefits of using this methanol grade in HPLC applications?

A: This methanol provides superior purity (99.9%) and extremely low water content (0.05%), which reduces background noise and potential interference in HPLC analyses. Its low residue after evaporation and stringent control of UV absorbance guarantee more reliable and accurate chromatographic results.

Q: When should this solvent be filtered, and is it compatible with 0.2 micron filters?

A: Methanol HPLC Gradient Grade Qualigens is already filtered through 0.2 micron filters prior to packaging, ensuring removal of particulates and suitability for highly sensitive analytical workflows. However, if needed, laboratories can further filter it using compatible filters for critical applications.

Q: Where is Methanol HPLC Gradient Grade Qualigens commonly used?

A: This solvent is widely used in research and quality control laboratories throughout India and internationally, serving as a standard for HPLC analyses and spectrophotometry due to its high purity and consistent quality.

Q: What process is used to ensure the low levels of heavy metals and residue?

A: Qualigens methanol undergoes meticulous purification, filtration, and quality control processes, including filtration through 0.2 micron filters and heavy metal testing (0.1 mg/kg as Pb), to ensure low residue after evaporation and minimal heavy metal content, making it suitable for sensitive analytical tasks.

Q: How does the low UV absorbance of this methanol benefit analytical work?

A: With UV absorbance at 254 nm kept at 0.3, this methanol minimizes interference during HPLC and spectrophotometric analyses, particularly for UV-detecting applications. This results in clearer baselines and more accurate sample readings.

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