对焊盘及烙铁头腐蚀极少
良好的扩散性
耐热和耐疲劳特性强
助焊剂飞溅少
良好的湿润性，焊点饱满光亮，助焊剂残留少，免清洗
Section 2. Composition/information on ingredients | |||
Name | CAS # No. | Weight % | Toxicity Data ( LC50/LD50, TLV) |
1) Tin 2) Silver 3) Copper 4)Modified rosin
| 7440-31-5 7440-22-4 7440-50-8 65997-06-0
| Remainder 0.28-0.32 0.60-0.80 2.75-3.25
| TWA: 2 (mg/m3) from ACGIH (TLV) [United States] [1994] INHALATION Respirable TWA: 0.1 (mg/m3) from NIOSH [United States] [1994] INHALATION TWA: 15 (mg/m3) from OSHA (PEL) [United States] INHALATION Respirable ORAL (LD50): Acute: 1400 mg/kg [Rat]. 2600 mg/kg [Rabbit]. 1900 mg/kg [Mouse] ORAL (LD50): Acute: 2400 mg/kg [Mouse]. 5660 mg/kg [Rat]. 2400 mg/kg [Mouse]. DERMAL (LD50): Acute: 4120 mg/kg [Rabbit]. |