T/CRIAC 0120-2026 Active Group standards

T/CRIAC 0120-2026 Chemical reagent—n-Heptane 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 0120-2026

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, packaging, and marking of n-heptane, a reagent used in spectroscopic analysis of chemical reagents. This document is applicable to the inspection of n-heptane, a reagent used in spectroscopic analysis of chemical reagents. Molecular formula: C7H16 Molecular weight: 100.20 (based on the 2022 International Atomic Weight Table) CAS No.: 142-82-5 Name Specifications Content (C7H16), w/% ≥99.0 Colorimetry/Hazen units ≤10 Evaporation residue, w/% ≤0.0005 Water content (H2O), w/% ≤0.03 Acidity (calculated as H+), b/(mmol/g) ≤0.0005 Alkalinity (calculated as OH-), b/(mmol/g) ≤0.0005 Fluorescent trace impurities (calculated as C20H24N2O2) Excitation wavelength (254 nm), μg/L ≤1 Excitation wavelength (365 nm), μg/L ≤1 Absorbance A1 (200 nm) ≤1.00 A2 (210 nm) ≤0.40 A3 (220 nm) ≤0.10 A4 (230 nm) ≤0.05 A5 (250 nm) ≤0.01 A6 (254 nm) ≤0.01 Infrared spectrum Pass