T/CRIAC 0104-2025 Active Group standards

T/CRIAC 0104-2025 Chemical reagent, GC reference standard, normal-hexane

Publish Date: 2025-02-11 Implement Date: 2025-02-20 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 0104-2025

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: -

ICS Name: Chemical production

Publish Date: 2025-02-11

Implement Date: 2025-02-20

Scope

Scope: This document specifies the characteristics, technical requirements, testing, inspection rules, and packaging and marking of n-heptane, a reference standard for gas chromatography. This document is applicable to the inspection of n-heptane, a reference standard for gas chromatography. Molecular formula: C7H16 Molecular weight: 100.21 (based on the 2022 International Atomic Mass Table) CAS No.: 142-82-5; Main technical content: - Content (C7H16): w/% ≥ 99.0 - Density (20°C): ρ/(g/mL) 0.683~0.684 - Evaporation residue: w/% ≤ 0.002 - Acidity (calculated as H+): b/(mmol/g) ≤ 0.001 - Non-carbonizable substances: qualified - Water content (H2O): w/% ≤ 0.05 Note: The content detection results do not deduct the water content.