Grades and Specifications

Grades and Specifications. Two grades of phloroglucinol, ie, grades 2 and pure, are offered in the United States by Haake, Inc., who resell material made by Fisons (Table 1). The product discolors slowly on exposure to light. 

Ammonium tetrathiotungstate, 25 385 Ammonium thiocyanate, 23 678—680 analytical methods for, 23 680 economic aspects of, 23 679 grades and specifications of, 23 680 health and safety factors related to, 23 680... 

Soda-anthraquinone (AQ) process, 21 22 Soda ash. See also Sodium carbonate applications of, 22 795t grades and specifications for, 22 793, 794t in preventing sodium combustion, 22 776 storage of, 22 794... 

Sodium manganatetV), 15 594 Sodium metabismuthate(V), 4 24 Sodium metabisulfite, 23 672-673 economic aspects of, 23 673 grades and specifications for, 23 673 health and safety factors related to,... 

Specific properties specific grades and specific additives Fire behaviour... 

Grades and Specifications. A technical crystal of 98% minimum assay with ca 2 wt % maximum water content is commercially available, as well as a 50—55 wt % aqueous solution (375,376). The latter is the predominant product. 

The important minerals, their grades and specifications are given below. 

Table 7.184 Ethylene Glycols Products, Grades and Specifications (27)...

The carbon black critical loading factor and the optimum loading level tvill be a function of the specific carbon black grade and specific grade of polymers in the rubber compound blend, and are therefore unique for each polymer and filler system. 

In addition, the advent of the European Union s Restriction of Hazardous Substances (RoHS) directive and the lead-free assembly processes that result are redefining the requirements for base materials. RoHS has a severe impact on all aspects of base materials technology. The impact of lead-free assembly on base materials and a method of selecting materials for lead-free assembly are discussed in Chaps. 10 and 11. Requirements to support circuit densification, reliability, and electrical performance are also critical and will be discussed in Chap. 9. This chapter discusses grades and specifications of base materials, as well as the manufacturing processes used to make them. 

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