Product Description

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Certification:ISO9001:2008

α-Ketoglutaric acid disodium salt / Dihydrate Trinder Reagent CAS NO 305-72-6 99%

Quick Detail:

Name	α-Ketoglutaric acid disodium salt,Dihydrate	Appearance	White crystalline powder
Assay	99.0～101.0	Solubility(1Maq.)	Clear, colorless solution
Transmittance,%	≥85.0	Heavy Metals ,ppm	≤5
Loss on drying,%	15.0-17.0	Chloride ,ppm	≤30

Description:
> CAS NO: 305-72-6
> Formula: C5H4O5Na2.2H2O
> Weight:226.09
> Appearance: White crystalline powder
> Storage: 2-8℃
> Safety Description:S22-24/25-45-36/37/39-26
> Danger Description:R23/24/25-36/37/38
> Danger Symbol:T

1.Applications:
A.Diseases related to infection of pathogenic strains of helicobacter pylori
B.gastric ulcers
C.gastric mucosa-associated lymphoid tissue lymphoma
2.Location
A. biology/biochemistry laboratory, pharmaceutical factory, cosmetics factory

Specifications

Assay:	99.0～101.0
Iron ion ,ppm	≤30
Loss on drying,%	15.0-17.0
Sulfate ,ppm	≤200
Heavy Metals ,ppm	≤5
Ammonium ,ppm	≤200
Chloride ,ppm	≤30
Shelf life	One year

Synonyms:
2-oxo-pentanedioicacidisodiumsalt;DISODIUM 2-KETOGLUTARATE;DISODIUM 2-OXOGLUTARATE;ALPHA-KETOGLUTARIC ACID, SESQUISODIUM SALT;ALPHA-KETOGLUTARATE DISODIUM;ALPHA-KETOGLUTARIC ACID DISODIUM SALT;2-KETOGLUTARIC ACID DISODIUM SALT;2-KETOGLUTARIC ACID SODIUM SALT;pentanedioic acid, 2-oxo-, monosodium salt; Disodium 2-oxoglutarate dihydrate

Related categories:
Building Blocks;Carbonyl Compounds;Carboxylic Acid Salts;Chemical Synthesis;Organic Building Blocks;metabolite

Related Products:

The determination of solubility
Weigh a certain amount of samples into test tube, add a certain amount of water, shake and dissolve, observe the solution.

The determination of Loss on drying
  Weigh a sample of approximately 2g (weighing accuracy 0.0001g),Record the weight of m,The sample was placed in a Petri dish constant weight (weight recorded as m0), the tile, the thickness of not more than 5mm, into the oven (As next dish cover removed) drying at 105-110 ℃ 3 hours.When removing, make sure the dish cover,be placed in a desiccator to cool, then weighed and the weight (including surface dish) m1.
Loss on drying in accordance with the following formula:

Where:
         m-- sample, g
       m0-- dish, g
          m1-- After drying the quality of the sample and the dish, g

Determination of iron content
  Preparation of standard iron solution
  Weigh ammonium iron(III) sulfate [FeNH4(SO4)2·12H2O] 0.863g .Placed in 1000mL volumetric flask, add water to dissolveand add sulfuric acid 2.5mL.Diluted with water to the mark, shake, as the stock solution.
   Before use, exact amount of stock solution 1mL, placed in 100mL flask, diluted with water to the mark and shake.
  Weigh 1g sample, placed in a crucible.Adding sodium carbonate 2g and mixed.Burning at 740 ℃,the residue is dissolved in dilute hydrochloric acid 15ml , displacing 50mL Nessler colorimetric tube , add dilute hydrochloric acid 4mL and ammonium persulfate 50mg , Diluted with water to make into 35mL, add 30% ammonium thiocyanate solution 3mL, plus the amount of water diluted into 50mL, shaked. If the color, take 1mL standard iron solution into 50mL Nessler colorimetric tube, add water to 25mL,4mL dilute hydrochloric acid and 50mg ammonium persulfate , diluted with water to 35mL, then plus 30% ammonium thiocyanate solution 3mL, plus the amount of water diluted into 50mL, shake comparisons.

Detection of heavy metals
     The meaning of heavy metals of this act is under the specified experimental condition, which can coloration effects with sodium sulfide or thioacetamide  .The glasses of preparation or storage is not allowed to contain lead.
5.8.1  Reagents
  a) Lead dinitrate:1μg/mL
   b) Sodium hydroxide :10%(m/v)
   c) Sodium sulfide :10%(m/v)
5.8.2  Preparation of lead standard solution
     Weigh lead dinitrate  0.1599g ,relocated to 1000mL volumetric flask, plus nitric acid 5mL and water 50mL, diluted with water to the mark , shake, as the stock solution.
5.8.3 Determination of step