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Posted by Jeff Chen Hunan Senan Industries. ( on August 15, 2003 at 01:23:44:

Hunan Senan Industries is a leading manufacturer and exporter of following main chemicals products:

1.Zinc Sulphate Monohydrate&Heptahydrate.
2.Magnesium Sulphate Monohydrate&Heptahydrate.
3.Ferrous Sulphate Monohydrate Powder&Granular.
4.Copper Sulphate Pentahydrate.
5.Manganese Sulphate Monohydrate Powder&Granular.
6.Barium Carbonate.
7.Barium Sulphate.
8.Lithopone B301&B311.
9.Zinc Oxide.
10.Citric Acid Monohydrate&Anhydrous.

Looking forward to your soon reply.

Jeff Chen
Hunan Senan Industries.

We mainly deal in exportations of organic and inorganic chemical materials, pharmaceutical raw materials, food additive agents, biological preparations, dyestuff and intermediates, pigments and assistants, fertilizers etc.

1.Zinc Sulphate Heptahydrate (Powder and Granular)
Properties: White crystal, easy soluble in water, insoluble in ethanol.
Uses: As Zinc additive in feed-processing, trace nutrient in animal feeds, fertilizer ingredient, Paint, Lithopone, Medicine, Leather, Zn electro analysis, Agriculture.

Index Chemical fiber grade
Content (ZnSO4.7H2O) % 98.5
Zn % 22.5
Fe % ppm 60
Pb % ppm 10
Cd % ppm 7
As % ppm 5
Water insoluble matter % 0.05
H2S test 10g sample 90ml water, then blow with H2S, the deposit is ivory-white

Packing: 25/50kg in plastic woven bag lined with plastic bag

2. Zinc Sulphate Monohydrate (Powder and Granular)
Molecular Formula: ZnSO4.H2O M.W.: 179.45
Properties: White Crystal Powder.
Usage: As Zinc additive in feed-processing, Precipiting agent for viscose rayon; activator in latex paper; trace nutrient in animal feeds; fertilizer ingredient; zinc salts; ore flotation; fungicide; water purification.

Item First grade
Zn % 36
ZnSO4.H2O % 99
Insoluble matter % 0.020
PH(50g/l) 4.0
Cl 0.20
Pb 10 ppm
Fe 100 ppm
Mn 100 ppm
Cd 10 ppm
As 5 ppm

Packing: 25Kg net Plastic woven bags lined with plastic bag.

3. Barium Carbonate (Powder and Granular)
Formula: BaCO3
Molecular weight: 197.35
It has three crystal state, monoclinic, hexagon and cubic. Its appearance is white powder. Almost insoluble in water. Decomposed when mixing with acid. Forming barium sulfate when combining with sulphuric acid. Decomposed barium oxide of 1400 . Tiny absorption of moisture toxic.
Uses: Carbonate in iron and steel induction of moisture toxic. Of barium salts optical glass paints ceramic. Enamel oil paints rubber. Pigment welding rod fireworks used in electronic industry as purifying agent of water and pesticide rat, etc.
Packing: in 25kg/1000kg pp bags.

Items Property
First grade Second grade Third grade
BaCO3 % 99.2 98.5 98.0
Moisture % 0.30 0.30 0.30
Reluctant matter % 0.05 0.10 0.15
Residue % 0.20 0.35 0.50
Fe % 0.004 0.008 0.012

4.Barium Sulphate
Properties: White or yellow white glassy powder. Density: 4.5 g/cm3
Melting Point: 1580. Hardness 2.5 - 3.5;not dissolve in eater and acid
Appliance: Mainly as heavies agent for natural gas or petroleum well drilling.
Barium component. Bulking agent for pigment rubber, papermaking.
Packing: in 25kg or 50kg pp bag.

Item First Grade
BaSO4 98%Min
Moisture 0.2%Max
Insoluble in water 0.2%Max
Fe 0.004%Max
S 0.003%Max
Soluble in acetic acid 0.6%Max
Oil absorption 15-25
PH Value 6.5-8.0
Residue (Through 325mesh) 0.1%Max

5.. Magnesium Sulphate Heptahydrate (Food Grade)
Packing: in 25kg plastic woven bag with plastic liner.
Uses: As material of other magnesium salts, in pharmaceutical industry, dying industry, feed, agriculture etc.

Item Index
MgSO4.7H2O 99%
As 2ppm
Cd 10ppm
Pb 25ppm
Fe 20ppm


Manganese sulphate(MnSO4H2O): 98%MIN
Mn: 31.8%MIN
Water Insoluble: 0.05%max
Cd: 0.0015%max
Pb: 0.0015%max
As: 0.0005%max

7. Zinc Oxide (99.7%, 99.5%, 99%, 98%, 95%)
Name of Commodity: Zinc oxide
Molecular Formula: ZnO
Molecular Weight: 81.39
Property: This commodity is a white powder, its density is 5.606, its melting point is 1975??. It is an oxide with two characters. It can dissolve in acid and base, ammonium chloride, and ammonia water. It cannot dissolve in water and alcohol. It can sublime when heated to 1800??.
Usage: rubber, ceramics, medicine, paint, printing and dyeing magnetism material, electron, paper making, feed, picture tube, etc.
Package: plastic lined woven bag 25Kg.
Production Style: indirect method.

Item Index
Type I Type II
Top grade Grade I Top grade Grade II
Zinc oxide % 99.70 99.50 99.70 99.50
Lead oxide(as Pb) % 0.037 0.05
Manganese oxide(as Mn)% 0.0001 0.0001
Copper oxide(as Cu)% 0.0002 0.0004
Insoluble in HCL solution % 0.006 0.008
Losses on ignition % 0.2 0.2
Screening residues(through 45um mesh)% 0.10 0.15 0.10 0.15
Soluble matters in water % 0.10 0.10 0.10 0.10
Volatile matters at 105% 0.3 0.4 0.3 0.4
Oil absorption g/100g % 14 14
Color (compared with standard specimen) Similar Few
Color killing (compared with standard specimen) 100 95

Properties: White Powder
Uses: Industrial material for paint, Printing ink, rubber and plastic
Specification: 25kg or 50kg net each

Index Super Grade
Total of Zinc and BaS04 (as ZnS) %(m/m) 99
Total Zinc (as ZnS) %(m/m) 28
Zinc oxide %(m/m) 0.6
Volatile matters at 105%(m/m) 0.3
Soluble matters in water %(m/m) 0.4
screen residues(63um mesh) %(m/m) 0.1
Color (Compare with standard specimen) Superior
Alkalinity of water extracting Neutral
Oil absorption g/100g 14
Color Killing(Compare with standard specimen)% 105
Hiding power (ratio) No below to 5%of standard sample
(Absolute difference)

9. Thiourea
Molecular formula: (NH2) 2CS
Molecular weight: 76.12
Property: white rhombic or needle bright crystal. It is bitter and inflammable. Specific gravity is 1.046; melting point is 170-182 , decomposed when being further heated. It will be sublimated when decompressed at 150-160 . It is soluble in cold water, ammonia thiocyanate solvent and alcohol, hardly soluble in diethyl ether.
Uses: pharmaceutical raw material, bleaching agent in textile dyeing and printing, auxiliary of dyeing and anti-oxidant. It can be used as rubber accelerator, floating agent, photo developing agent, peroxide thiourea, cold wave, etc. It is also used in resin compression molding powder, electroplating blueprinting and boiler washing.

Item Standard
Purity(CH4N2S)% 99.0
Heating loss(H2O) % 0.40
Ash% 0.10
Water-insoluble matter% 0.02
Rhodonidegh CNS% 0.02
Melting point 171

10. Thiourea Dioxide
Molecular formula: CH4N2O2S
Molecular weight: 108.12
Property: Odorless white powder. It is a kind of stable chemical compound with no ox disability and reducing property. Its solubility in water is 26.7g/l(at 20 ).The PH value of aslurated solution is 5.0, and it is very stable in solution while temperature is between 20-30 .It will decompose and form sulfurous acid under the action of alkali and heating.
Usage: Mainly used in dyeing industry to substitute for sodium hydrosulfite and used in synthetic fiber industry and organic synthesis industry, also used as additives of polyreation, staibhzer of polythene and photographic sensitizer, etc. It has the following advantage: It is safe when storing and transporting, the reduction potential is high, and it is specially suitable for continuous dyeing and bleaching with high temperature.

Item Standard
Purity(CH4N2O2S ) % 99.0
Purity(CH4N2S) % 0.10
Sulfite (SO4)% 0.17
Fe % 0.003
Moisture % 0.08

Molecular Formula: KCLO3
Properties: A strong oxidant, react easily with carbon, sulfur, phosphors and organic compound.
Combustion or explosion will happen when its mixture with combustible substance was struck.
It is toxic and resistant to air-slake.
Appearance: White powder
Application: Mainly in the manufacture of match, fireworks, signal rocket and explosive, and also be the raw material of potassium perchlorate.
Package: 25kgs or 50kgs (net weight) in iron drum, wooden case, carton or braided bag according to customer's requirement.

Item Quality??Index
Special Grade
(GB-752-94) DF Type Slack Type(A Type)
Potassium Chlorate % 99.7 99.5 99.5
Moisture % 0.10 0.05 0.05
Water-Insoluble matter% 0.10 0.10
(with anti-caking agent) 0.10-0.48
(with anti-caking agent)
Chloride(as Cl)% 0.03 0.02 0.02
Bromate(as BrO3)% 0.08 0.01 0.03
Sulphate(as SO4)% 0.03 0.01 0.01
Ferrous (Fe)% 0.005 0.003 0.003
Sieved Residue(125um)% (125um)%1.0 (212um)%1.0
(45um)%50 (125um)%0.5

Looking forward to your soon reply.

Jeff Chen
Hunan Senan Industries.

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