Sodium Cyanide

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Product Short Description: Sodium Cyanide
Product Technical Specification:
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MetaSorb Activated Carbon

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Product Short Description: Activated Carbon is a very active product with a high proportion of medium and large pores. It is recommended for the adsorption of large quantities of high molecular weight substances.
Product Technical Specification:

 

Physical

Appearance: Dark grey/black powder
Specific Gravity: .22-.32
Pour Point: 2150ºC
Flash Point: Not flammable

Chemical

Type: Charcoal
Solubility: Negligible (water, oil)
pH: 4.0-6.0
Microtox: Not applicable

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Molten Salt HT

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Product Short Description: Salt inhibited with the corrosion inhibitor resulting corrosion protection, as well as efficient heat transfer.
Product Technical Specification:

 

Appearance : White to yellow Crystaline Powder
Odour : Odourless
Meting Point : 143°C
Bulk Densiry : 2.10
Chloride Content : Less Then 0.2%
Remarks:
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Molten Salt

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Product Short Description: Salt inhibited with the corrosion inhibitor resulting corrosion protection, as well as efficient heat transfer.
Product Technical Specification:

 

Main Ingredients   : Salt Mixture with Corrosion Inhibitor
Inhibitors and
water
 
6
Inhibitors
: 6 %
Colour Bright : Yellow
Nitrite Content : 7.5 to 8.5%
Chloride Content  0.10% Max.
pH of solution : 9.5 - 10.5
Odour            : PRACTICALLY ODOURLESS
Solubility in water        : SOLUBLE
Melting Point       : Max 150 - 155 °C
Working Temp Range : 155 – 540 Deg.C
Density @ 20 Deg.C : 1160 Kg/m3
Reverse Alkalinity         : Minimm 15.0 ml
Vapour pressure    : .07 mbar at 20oC
Hear Transfer Salt TR : 155
Skin absorption/irritation       : YES
TLV       Country     :  
Pollution category    1994       : III
 
Remarks:

Why use Heat Transfer molten salts?

Heat Transfer Salt extend the upper range of the temperature limits in which a liquid heat transfer media can be used.

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Silicon Manganese

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Product Short Description: In electric submerged-arc furnaces Silico-manganese is chemically manufactured by silico-thermic reduction, using manganese ores and/or slags from the production of ferro-manganese.
Product Technical Specification:
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Rifle Bore Cleaner RXSOL

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Product Short Description: A highly penetrating, mobile liquid and is intended for field application to satisfy the complete need of cleaning of military weapons.
Product Technical Specification:

 

 

Appearance : Amber liquid
Odor                                            : Mild
Odor Threshold : Not available

pH

: Not Applicable
Flash Point : 65°C
Boiling Point : >150° C
Density : 0.861 g/cm3
Auto Ignition Temperature : 254° C
Refractive Index : 1.455
Water Solubility : Negligible

 

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Premix Glycol

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Product Short Description: It is an odorless, colorless, sweet-tasting, viscous liquid.
Product Technical Specification:

Description: Monoethylene Glycol

Test Description

Specification Limits 

Min. Max. 

Unit  of Measure 

Test  Method 

Monoethylene Glycol

80

%(w/w)

Water

20

%(w/w)                                   ASTM E-203

Acidity (as acetic acid)

0.001

%(w/w)                                 ASTM D-1613

Iron

0.1

ppm                                      ASTM E-202  

DEG

05

%(w/w)                                           SD-498

Aldehyde (as acetaldehyde Chloride)

10

ppm

Ash

0.001

%(w/w)                                          ISI 5295

pH at 20oC

6.5

7.5

Appearance

Clear

Visual

Specific Gravity 20/20oC

1.01

1.01

UV Tansmittance wavelength %

220

70

nm

275

90

nm

350

98

nm

 
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Potassium Oxalate Monohydrate (Crystal)

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Product Short Description: Potassium Oxalate
Product Technical Specification:
Compound Formula C2K2O4
Appearance Colorless crystals
 Molar Mass 166.22 g/mol
Melting Point 160 °C
Boiling Point N/A
Density 2.13g/cm3
Remarks:
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Sodium Dichromate BICHROMATE

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Product Short Description: The sodium dichromate addition and lit : higher nitric acid concentration both reduce the chance of undesirable flash attack.
Product Technical Specification:

10588-01-9 (Anhydrous)
7789-12-0   (Dihydrate)

PHYSICAL AND CHEMICAL PROPERTIES
 
PHYSICAL STATE              Odorless Orange to Red crystals or granules
MELTING POINT                357 C
BOILING POINT                 400 C
 
SPECIFIC GRAVITY           2.35
SOLUBILITY IN WATER Highly soluble (74.0% at 25°C)
 
pH                                         3.0 - 4.6 upon concentration
 
VAPOR DENSITY               10

NFPA RATINGS
 Health: 4; Flammability: 0; Reactivity: 2; Special Hazard: OX

FLASH POINT                    400 C
 
STABILITY                           Stable under ordinary conditions 

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AURA GOLD RECOVERY AGENT

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Product Short Description: Uses of AURA leaves no gold residues in the solution.
Product Technical Specification:
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Other TYPICAL Purification method of GOLD

Dissolve gold  scrap into to aqua regia solution and heat the solution slowly, do not boil.  Leave the solution at least 1 hrs then Extra nitric of the gold solution can be neutralized with urea addition till the point where the urea does not react any more. Then use Na2SO4 (  sodium metabisulphite )  is better for dropping the gold (free electrons greater reactivity).   Rest solution 24 hours. Then filter precipitate.

Or you can use  ferrous sulphate in place of Sodium metsabisulphite. Second, for neutralisation you add urea and add zinc dust to reduce all metals.

Method Precipitate the GOLD with sodium metabisulfite/ zinc :
Recover gold from Filings, Setting, Waste water, Consumables used in production, Emery papers, and sweeps from the production floors then dissolve into aqua Regia solution, Let it work 1 night or simply heat it up for a while to shortened the process and on filtration precipitate it. Filter the solution and neutralize it with Urea or just heat it up until all of the nitric vaporized. Watch out not to lose any precious metal during the heating. Test the pH. Precipitate gold using sodium metabisulfite / ferrous sulphate / zinc.


Gold precipitate from aqua regia solution by using hydroquinone. It was so simple and attaining 99.99% purity after firing was an incredible delight.
Refining the silver chloride left over from the solution was a little more of a chore but I got to within 80%.
 

Method to precipitate the Gold with Hydrazine Hydrate : 
Recovere all gold from working area then dissolve all into Aqua Regia Solution. Leave this solution for 10 -12 hrs to complete precipitation, then Filter it out. And addition of Hydrazine hydrate 64 or 85% (liquid)  works well  to precipitate gold from  acid gold plating baths which contain HAuCl4 solution.
 

After addition of Hydrazine Hydrate you can practically see big brown spongy ball like gold getting precipitated & once all the gold in the solution has precipitated the solution at the top has lot of white foam, which indicates the end of precipitation. Finally neutralise the solution with 25% urea solution.
This will give you the necessary result in recovering pure gold.
 

We let the solution stand overnight to settle down & recover gold from it by washing it with water.


Hydrazine Hydrate also used in GOLD purifiaction faxctory.  Remember Hydrazine Hydrate does not work well with alkaline solution.
NOTE : You use hydrazine hydrate for gold precipitation. Don't add urea in gold chloride solution.
You can also dilute hydrazine hydrate with five parts of water, that is 1:5. Then you add it in your gold chloride solution. You can get exact value by checking your pH level of gold chloride.
Hydrazine Hydrate Reaction can be easily understand by this reaction :::

PtCl4+N2H4=Pt+N2+4HCl
4AuCl3+3N2H4=4Au+3N2+12HCl
4AgNO3+N2H4=4Ag+N2+4HNO3.



  
Aqua Regia :  3 HCL+1 Nitric Acid.

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