Potassium trihydrogen oxalate dihydrate

Potassium trihydrogen oxalate dihydrate - Names and Identifiers

Name	Potassium tetraoxalate dihydrate
Synonyms	POTASSIUM TETRAOXALATE Potassium tetroxalate dihydrate Potassium tetraoxalate dihydrate POTASSIUM TETRAOXALATE DIHYDRATE Potassium Tetra Oxalate dihydrate Potassium trihydrogen oxalate dihydrate Potassium Trihydrogen Oxalate dihydrate Potassium Tetraoxalate Dihydrate [for Determination of pH] Potassium tetraoxalate dihydrate,Oxalic acid hemipotassium salt
CAS	6100-20-5
EINECS	612-064-2
InChI	InChI=1/2C2H2O4.K.2H2O/c23-1(4)2(5)6;;;/h2(H,3,4)(H,5,6);;2*1H2/q;;+1;;/p-1

Potassium trihydrogen oxalate dihydrate - Physico-chemical Properties

Molecular Formula	C2H5KO5
Molar Mass	148.16
Density	1,84 g/cm3
Boling Point	365.1°C at 760 mmHg
Flash Point	188.8°C
Water Solubility	soluble
Solubility	H2O: 0.1M at20°C, clear, colorless
Vapor Presure	2.51E-06mmHg at 25°C
Appearance	White crystal
Color	White to beige
Merck	14,7689
BRN	3854419
PH	1.7 (12.6g/l, H2O, 25℃)
Storage Condition	Inert atmosphere,Room Temperature
Stability	Stable. Incompatible with strong oxidizing agents.
Sensitive	Easily absorbing moisture
MDL	MFCD00150443
Use	Used as an analytical reagent, also for the preparation of buffer solutions

Potassium trihydrogen oxalate dihydrate - Risk and Safety

Hazard Symbols	Xn - Harmful
Risk Codes	21/22 - Harmful in contact with skin and if swallowed.
Safety Description	24/25 - Avoid contact with skin and eyes.
UN IDs	UN 3261 8/PG 3
WGK Germany	1
TSCA	Yes
HS Code	2917 11 00
Hazard Class	6.1
Packing Group	III

Potassium trihydrogen oxalate dihydrate - Introduction

Stable in the air.

Last Update：2022-10-16 17:27:03

Potassium trihydrogen oxalate dihydrate - Reference Information

Background	potassium tetraoxalate, also known as potassium trihydrogen oxalate, potassium trihydrogen oxalate, and potassium tetraethylene glycol; the English name is tasor potassiumtetraoxalate. Pure product is a colorless crystal or white powder. Heated to 100 ° C water loss into anhydrous, higher temperature when the decomposition of potassium carbonate and carbon monoxide, etc., soluble in water, slightly soluble in alcohol. Domestic analysis of pure potassium tetraoxalate, the current market price of 120~150 yuan/Kg. Import high-grade pure potassium tetraoxalate, the market price is 1568~1850 yuan/Kg. At present, the preparation of potassium tetraoxalate is obtained by chemical reaction of excess oxalic acid with potassium salts such as potassium carbonate or potassium chloride. Potassium tetraoxalate is produced by chemical reaction, and the by-products of hydrochloric acid and oxalic acid bring pollution to the environment; Excessive oxalic acid increases the environmental hazards; Potassium carbonate and potassium chloride are used as the reaction matrix in the production of potassium carbonate, potassium chloride also causes secondary pollution to the environment, which makes the production cost of potassium tetraoxalate high. But the use of microbial production of potassium tetraoxalate, has not been reported.
Application	potassium tetraoxalate has a wide range of industrial uses, is leather, fabric finishing agent, mordant, metal polishing, rust Inhibitor, organic chemical raw materials, catalysts, reference materials for chemical analysis and Analytical reagents are also used in the preparation of photosensitive materials.
preparation	a method for fermentative production of potassium tetraoxalate by Aspergillus niger, comprising the following steps, isolation and purification of Aspergillus niger: Select the stem segment of Huperzia rugosa plant, rinse with running water for 2-3 hours → 75% alcohol Disinfection 1-2min → 0.01mol/L hydrochloric acid, 5% sodium hypochlorite, 2.4mmol/L citric acid is rinsed once in sequence → 5% sodium hypochlorite Disinfection for 10~12min → sterile water is rinsed 3-5 times → 10% hydrogen peroxide is Disinfection for 8-12min → sterile water is rinsed 4~5 times → sterile absorbent paper is dried by suction surface water → inoculation on PDA plate → separation, aspergillus niger was purified. B, Aspergillus niger liquid fermentation culture: per liter of PDA liquid culture medium, add sucrose 5~25g,pH value is adjusted to 4.7~6.4, under aseptic condition, inoculation of Aspergillus Niger Spores, the amount of Aspergillus Niger Spores was 1 liter of PDA culture medium plus 1%(volume) of Aspergillus niger spores, the spore concentration was 1 × 104 ~ 106cfu/mL, and the culture temperature was 30~40 ℃, the rotation speed is 120~150 r/min, the air flow is 30% of the total volume of the culture solution, that is, the sum of the PDA culture solution, sucrose and Aspergillus niger spore inoculation amount, the constant temperature fermentation culture for 72-100 hours, filter the mycelium, the fermentation broth was concentrated to 1/20 ~ the total volume of the culture broth ~ 1/15, precipitation of crystals, ultra pure water washing 4~5 times, 40~50 Deg C drying, to get potassium tetraoxalate products.
Use	used as analytical reagent, also used in the preparation of buffer solution used to remove rust and ink, polishing metal articles, etc.; Analytical reagent pH reference reagent. Rust and water traces were removed. Cleaning of metals. Determination of pH, Analytical reagents

Last Update：2024-04-09 15:16:51

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