INickel sulfamate concentrate
Nickel sulfamate is a main salt of nickel plating which has developed rapidly in the world in recent years.因其内应力低,沉积速度快,而在汽车、摩托车、冶金、电子、镍网、铝合金等行业得到了广泛应用.该工艺最关键之处是Nickel sulfamate concentrate(NICKEL SULFAMATE SOLUTION)of高纯度;在严格控制条件下生产ofNickel sulfamate concentrate无需任何添加剂就能产生低应力之镀层;如配合添加剂of使用,则能得到外观更佳,内应力更低of镀层
Molecular formula : Ni(NHtwoSOthree)two
CAS :1three770-89-three
EINECS :twothree7-three96-1
English name : Nickel sulfamate
Physicochemical properties : clear dark green solution
Technical indicators | 1-nsgc | domestic | two-NSUI | 美商产 | three-NSWD|典型值 | |
Nickel sulfamate concentrate(nickel content) | 178.5-18three.5g/L | 178.5-18three.5g/L | 180.5 g/L | 65% | 179.two-18three.two g/L |
proportion,g/mL(two5℃) | 1.5three0-1.600 | > one point five four | 1.54-1.58 | |
PH value(two5℃) | 4.0-5.0 | 4.0-4.7 | four point five | 4.4-5.0 |
iron Iron|Fe | < 5ppm | < twoppm | 5ppm | < 1ppm |
zinc Zinc|Zn | < 5ppm | < 1ppm | twoppm | < 1ppm |
copper Copper|Cu | < 5ppm | < 1ppm | 1ppm | < 1ppm |
lead Lead|Pb | < 5ppm | < 1ppm | 1ppm | < 1ppm |
chromium Chromium|Cr | < 5ppm | twoppm | ||
cadmium Cadmium|Cd | < 5ppm | 1ppm | ||
manganese Manganese|Mn | < 5ppm | < 1ppm | ||
cobalt Cobalt|Co | < two0ppm | |||
calcium Calcium|Ca | < 5ppm | two0ppm | ||
Chloride ion Cl | 10ppm | |||
Sulfate radical SO4 | < 700ppm | three65ppm | ||
Free ammonia NHthree | < 150ppm | 60ppm | ||
Package specification: | two0公升;two00公升 | 5 gallons; 55 gallons | two5公斤 |
IITest items and analysis methods of nickel sulfamate solution
1.proportion:用proportion计测定(1.550-1.556)
two.PH值:酸度计测定
three.杂质含量(Fe,Pb,Cu,Zn,Ca,Mn):AA测定
4. Determination of nickel content
1)在室温two0℃When, remove10ml样品放于100ml容量瓶中,用DI水稀释至刻度,取上述稀释液10ml放于two50ml锥形瓶中;
two)在锥形瓶中加入约15ml浓氨水(分析纯),加入50ml去离子水,再加入0.twog紫脲酸铵(固体)指示剂放于瓶中摇匀;
three)用0.1MofTitrate EDTA standard solution until the solution is purple.
4) Calculation: nickel content (g / L) = 5.869 × VEDTA
VEDTA………滴定所用ofEDTA标准溶液of体积,mL
5.Sulfate radical浓度of测定
1)用10ml量筒移取100ml氨基磺酸镍溶液样品于500ml烧杯中,用170ml去离子水稀释样品,再加入three5ml 0.1MBaCltwo溶液;
two)用搅拌磁子,在加热搅拌器上搅拌15分钟,温度设定70℃,如果看不到沉淀出现,则原溶液ofSulfate radical浓度小于two0ppm;
three)将上述溶液静置陈化过夜;
4)取洁净of玻璃砂芯漏斗,在洪箱中(80℃)Dry for half an hour, cool and weigh accurately to the nearest0.0001g——M1(g);
5)小心地倾去上层清液,用玻璃砂芯漏斗过滤沉淀,沉淀应为亮白色(如果是黄色,则用少量of5-10%稀盐酸洗涤沉淀),用去离子水彻底清洗沉淀;
6) Put the glass sand core funnel and precipitate into the oven for 80 minutes℃,two小时,使沉淀完全干燥,准确称其重量,精确到0.0001g——Mtwo(g);
7)计算: 溶液中Sulfate radicalof浓度(ppm)为a
? a=1threetwotwo.9(Mtwo-M1)×two
**SO4(Mtwo-M1)×10/BaSO4×100×1.555
Ammonium concentration in nickel sulfamate solutionppm为c,固体氨基磺酸中Sulfate radical浓度ppm为b,
c=0.1875(a-0.three85b)
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