T/ZHLSSH 007-2024 Active Group standards

T/ZHLSSH 007-2024 Recycle dichloromethane

Publish Date: 2024-12-24 Implement Date: 2025-01-10 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/ZHLSSH 007-2024

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: -

ICS Name: Haloalkanes

Publish Date: 2024-12-24

Implement Date: 2025-01-10

Scope

Scope: This document specifies the requirements, test methods, inspection rules, marking, packaging, transportation, storage, and safety for the recovery of methylene chloride. This document applies to the production, inspection, sale, and use of methylene chloride recovered by distillation separation from waste solvents containing methylene chloride generated during the synthesis of benserazide hydrochloride intermediates in the pharmaceutical industry. This product is only suitable for use in industries such as coating, dyeing, and plastics. Main technical content: Table 1 Technical Requirements Item Requirements First-grade product Second-grade product Water content, % (m/m) <1.0 Content, % (methylene chloride, m/m) ≥98.0 ≥95.0 Colorimetry/Hazen units (Pt-Co color number) <20 Evaporation residue, % (m/m) <0.001 <0.004