(1) Primary: a carbon atom having not more than one other carbon directly attached to it. (2) Secondary: a carbon atom having two other carbon atoms directly attached to it. (3) Tertiary: a carbon atom that is joined to three other carbon atoms. (4) Quatenrary: a carbon atom having four other carbon atoms directly attached to it.
Hangzhou ZeErRui Chemical Co., Ltd. Hangzhou ZeErRui Chemical Co., Ltd. located in Lingang industrial areas, our plant covers an area of 6000 square me.. Tianjin YR ChemSpec Technology Co.,Ltd. YR Chemspec?is a qualified manufacturer and supplier which audited and approved by SGS and ISO,we are strictly foll..