GB/T 23519-2023 - Chlorotris(triphenylphosphine) rhodium

Standard No.: GB/T 23519-2023
Language: Chinese, Available in English version
Release Date: 2023
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest: GB/T 23519-2023
Replace: GB/T 23519-2009

Introduction

In-depth interpretation of GB/T 23519-2023 "Triphenylphosphine Rhodium Chloride"

Technical requirements dimension	Specific requirements
Technical requirements dimension	Chemical composition (%)	Impurity control (%)
Rhodium mass fraction is not less than 95%	Fe ≤ 0.002%, Ni ≤ 0.002%, Pb ≤ 0.002%, Mg, Zn, Cu and other impurity elements are strictly restricted

Compared with GB/T 23519-2009, the new version of the standard has been improved in the following aspects:

Newly added marking and molecular formula/structural formula: The normative requirements for product identification are clarified.
Impurity element control stricter: The upper limits of impurities such as Fe, Ni, and Pb have been relaxed, and the control of new impurities such as Mg, Zn, and Mn has been introduced.
Newly added mass fraction detection method: High performance liquid chromatography and gravimetric method have been introduced to improve detection accuracy and efficiency.

To ensure that enterprises smoothly transition to the new version of the standard, it is recommended to take the following measures:

Equipment update and technical training: Invest in the purchase of instruments and equipment that meet the new detection methods, and provide professional training for relevant personnel.
Optimize production process: Adjust raw material screening and production process according to new impurity control requirements.
Establish internal standard system: Refer to GB/T 23519-2023 and formulate internal quality management standards.

GB/T 34609.1 Method for chemical analysis of rhodium compounds—Part 1: Determination of rhodium content—Gravimetric method with hexaammine cobalt nitrate
GB/T 34609.2 Method for chemical analysis of rhodium compounds—Part 2: Determination of silver,gold,platinum,palladium,iridium,ruthenium,lead,nickel,copper,iron,tin,zinc,magnesium,manganese,aluminium,calcium,sodium,potassium,chromium and silicon contents—Inductively c
GB/T 6682 Water for analytical laboratory use.Specification and test methods
GB/T 8170 Rules of rounding off for numerical values & expression and judgement of limiting values