质量标准（GB/T 13941-2015）

项目	指标
项目	MDI-100	MDI-50
外观	固体为白色至浅黄色晶体，液体为透明液体	无色至粉色液体
结晶点 ℃	≥38.1	≤15.0
纯度 %	≥99.6	≥99.6
2,4＇-MDI含量 %	≤2.0	50.0~54.0
4,4＇-MDI含量 %	≥97.0	44.5~49.0
色度/ (铂-钴色号）	≤30	≤50
水解氯含量%	≤0.003	≤0.005
环己烷不溶物%	≤0.2	≤0.2

用途：初级品广泛用于聚氨酯涂料，还用于防水材料、密封材料、陶器材料等。精制品可制成汽车车挡、缓冲器、合成革、非塑料聚氨酯、聚氨酯弹性纤维、无塑性弹性纤维、薄膜、粘合剂等。

Diphenyl-methane-diisocyanate

Formula:C15H10N2O2 Molecular Weight：250.24

CAS No.：101-68-8

Appearance：White to pale yellow melted solid and irritating stench when heated

Specification：（GB/T 13941-2015 ）

project	Index
project	MDI-100	MDI-50
Appearance	The solid is white to light yellow crystal, and liquid is transparent	Colorless to pink liquid
Crystallizing point ℃	≥38.1	≤15.0
purity %	≥99.6	≥99.6
2,4＇-MDI %	≤2.0	50.0~54.0
4,4＇-MDI %	≥97.0	44.5~49.0
color number/ (Platinum cobalt）	≤30	≤50
Hydrolytic chlorine%	≤0.003	≤0.005
Cyclohexane insoluble%	≤0.2	≤0.2

purpose：The primary products are widely used in polyurethane coatings, and are also used in waterproof materials, sealing materials, pottery materials and so on. Product can be made car Block, buffer, synthetic leather, plastic polyurethane, polyurethane elastic fiber, elastic fiber, plastic film, adhesive etc.

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