T/CRIAC 0117-2026 Active Group standards

T/CRIAC 0117-2026 Chemical reagent—Tetrahydrofuran for spectroscopy analysis（inhibitor-free）

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

Price: $ 20.00

Out of stock

Basic Information

Standard Code: T/CRIAC 0117-2026

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 characteristics, specifications, test methods, inspection rules, and packaging and marking of tetrahydrofuran (without stabilizers) used for spectral analysis of chemical reagents. This document is applicable to the inspection of tetrahydrofuran (without stabilizers) used for spectral analysis of chemical reagents. Molecular formula: C4H8O Molecular weight: 72.11 (based on the 2022 International Atomic Weight Table) CAS number: 109-99-9 Name Specifications Content (C4H8O), w/% ≥99.5 Colorimetry/Hazen units ≤10 Evaporative residue, w/% ≤0.002 Water content (H2O), w/% ≤0.05 Acidity (calculated as H+), b/(mmol/g) ≤0.0008 Alkalinity (calculated as OH-), b/(mmol/g) ≤0.0006 Fluorescent trace impurities (calculated as C20H24N2O2) Excitation wavelength (254 nm), μg/L ≤1 Excitation wavelength (365 nm), μg/L ≤1 Absorbance A1 (215 nm) ≤1.00 A2 (230 nm) ≤0.50 A3 (245 nm) ≤0.30 A4 (250 nm) ≤0.20 A5 (265 nm) ≤0.10 A6 (275 nm) ≤0.05 A7 (310 nm) ≤0.01 Infrared spectrum Pass