T/CRIAC 0086-2023 Active Group standards

T/CRIAC 0086-2023 Chemical reagent, gas chromatography reference substance, dichloromethane

Publish Date: 2023-07-10 Implement Date: 2023-08-01 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 0086-2023

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: -

ICS Name: Chemical reagents

Publish Date: 2023-07-10

Implement Date: 2023-08-01

Scope

Scope: This document specifies the properties, specifications, testing, inspection rules, and packaging and marking of dichloromethane, a control substance used in gas chromatography of chemical reagents. This document is applicable to the inspection of dichloromethane, a control substance used in gas chromatography of chemical reagents. Main technical contents: 1. Content (CH2Cl2), w/% ≥ 99.90 2. Colorimetry/Black's unit ≤ 103 3. Density (20℃), ρ/(g/mL) 1.320~1.330 4. Evaporation residue, w/% ≤ 0.0025 5. Acidity (calculated as H+), b/(mmol/g) ≤ 0.0003 6. Free chlorine (Cl), w/% ≤ 0.00017 7. Methyl chloroform (CHCl3), w/% ≤ 0.18 8. Carbon tetrachloride (CCl4), w/% ≤ 0.19 9. Iron (Fe), w/% ≤ 0.0001 10. Water (H2O), w/% ≤ 0.05