Nickel sulfamate solution and its analytical method

2022-03-03 231

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

Nks | daily chemical products

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

proportiong/mLtwo5℃)

1.5three0-1.600

> one point five four


1.54-1.58

PH valuetwo5℃)

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two0When, 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 minutestwo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)