GB/T 32469-2016Plastics—Polyurethane raw materials—Toluene diisocyanates (English PDF)

1 Scope

This standard specifies the classification, requirements, test methods, inspection rules, and labeling of toluene diisocyanate (hereinafter referred to as TDI)

Equipment, storage and transportation.

This standard is applicable to one or more specifications of toluene diisocyanate (TDI) products prepared by photochromation of toluene diamine (TDA)

And other specifications of toluene diisocyanate (TDI) products made by physical methods.

TDI English name. TolueneDisocyanate.

Structure.

Molecular formula. C9H6N2O2

Relative molecular mass. 174.16 (according to.2001 International relative atomic mass meter).

2 normative reference documents

The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article

Pieces. For undated references, the latest edition (including all modifications) applies to this document.

GB 190 Dangerous Goods Packaging Mark

GB/T 325.3-2010 Packaging containers Steel drums Part 3. Minimum total capacity 212L, 216.5L and 230L Closed steel drums

GB/T 605 Chemical reagents - Common methods for chroma determination

General rules for sampling of chemical products GB/T 6678-2003

General rules for sampling of liquid chemical products GB/T Representation and Judgment of Numerical Correction Rule and Limit Value of GB/T 8170

GB/T 12009.2 Aromatic isocyanates for the production of plastic polyurethanes - Part 2. Determination of hydrolyzed chlorine

GB/T 12009.4 Aromatic isocyanates for the production of plastics polyurethanes - Part 4. Determination of isocyanate content

GB/T 12009.5 Aromatic isocyanates for the production of plastic polyurethanes - Part 5. Determination of acidity

General technical requirements for transport packaging of dangerous goods GB 12463

GB/T 32471 Plastics - Determination of isomerization ratio of toluene diisocyanate for polyurethane production

GB/T 32477 Plastics - Determination of Total Chlorine Content in Toluene Diisocyanates for Polyurethane Production

3 classification

This product is based on 2,4-TDI content is divided into TDI-65, TDI-80, TDI-100 three specifications, use in Table 1.