T/CRIAC 0115-2026 Active Group standards

T/CRIAC 0115-2026 Chemical reagent—Dichloromethane for spectroscopy analysis

Publish Date: 2026-01-06 Implement Date: 2026-01-26 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/CRIAC 0115-2026

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: -

ICS Name: Chemical reagents

Publish Date: 2026-01-06

Implement Date: 2026-01-26

Scope

This document specifies the properties, specifications, test methods, inspection rules, and packaging and marking of methylene chloride, a reagent used in spectral analysis of chemical reagents. This document is applicable to the inspection of methylene chloride, a reagent used in spectral analysis of chemical reagents. Molecular formula: CH2Cl2 Molecular weight: 84.93 (based on the 2022 International Atomic Weight Table) CAS number: 75-09-2 Name Specifications Content (CH2Cl2), w/ % ≥99.5 Colorimetry/Black's unit ≤10 Evaporative residue, w/ % ≤0.002 Water content (H2O), w/ % ≤0.02 Acidity (calculated as H+), b/(mmol/g) ≤0.0003 Alkalinity (calculated as OH-), b/(mmol/g) ≤0.0003 Fluorescent trace impurities (calculated as C20H24N2O2) Excitation wavelength (254 nm), μg/L ≤1 Excitation wavelength (365 nm), μg/L ≤1 Absorbance A1 (235 nm) ≤1.00 A2 (240 nm) ≤0.30 A3 (250 nm) ≤0.08 A4 (255 nm) ≤0.03 A5 (260 nm) ≤0.02 Infrared spectroscopy Pass/Fail