USD $1.00-1.00 / Kilogram
USD $1.00-1.00 / Kilogram
USD $1.00-1.00 / Kilogram
USD $1.00-1.00 / Kilogram
USD $1.00-1.00 / Kilogram
USD $1.00-1.00 / Kilogram
USD $1.00-1.00 / Kilogram
USD $1.00-1.00 / Kilogram
USD $1.00-1.00 / Kilogram
supply 98%min amporphous element boron 7440-42-8 with favorable price
1,high purity: 99%,99.9%,99.99% and partical size can be 0.5μm,1μm,5μm,10μm,20μm,50μm......or made to order as requesd;
2, superb quality and competitive price;
3, sample for free;
4, small order can be accepted.
supply 98%min amporphous element boron 7440-42-8 with favorable price
physical and chemical properties:
appearance |
purity |
moh'shardness |
specific gravity |
fire point |
melting point |
boiling point |
dark powder |
99% |
9.3 |
1.75 |
700oc |
2160oc |
2700oc |
dark granule |
99% |
9.3 |
1.75 |
900oc |
2360oc |
2700oc |
appearance |
specific heat |
coefficient ofexpansion |
ec |
electrical resistivity |
||
dark powder |
1.294j/g |
2×10-6 |
600oc,ec100 times |
1.8×10125μs/cm |
||
dark granule |
superiority:
1、high purity
2、high uniformity of particles,high quality
3、safe storage for a long time
purity: 99%testing method: icpmstesting resultfe: 10au: 0.1ag: 0.1cu: 0.05sn: 0.2mg: 0.01mn: 8pb: 0.2li: 0.1
purity: 99.99%testing method: icpmsfe: 150au: 0.2ag: 0.05cu: 25sn: 0.3mg:2.6mn: 7.8pb: 0.05li: 0.6