D-Potassiumsodiumtartrate
CAS: 304-59-6
Molecular Formula: C4H4KNaO6
D-Potassiumsodiumtartrate - Names and Identifiers
D-Potassiumsodiumtartrate - Physico-chemical Properties
| Molecular Formula | C4H4KNaO6 |
| Molar Mass | 210.16 |
| Density | 1.24 |
| Melting Point | 70~80℃ |
| Boling Point | 100 °C |
| Water Solubility | g anhydrous/100 g H2O: 31.9 (0°C), 67.8 (20°C), 102 (30°C) [LAN05]; slightly soluble alcohol [MER06] |
| Solubility | Methanol, Water |
| Vapor Presure | 0Pa at 25℃ |
| Appearance | Liquid |
| Color | Clear Colorless |
| Maximum wavelength(λmax) | ['λ: 260 nm Amax: 0.03', , 'λ: 280 nm Amax: 0.025'] |
| PH | 7.0-8.5 (25℃, 1.5M in H2O) |
| Storage Condition | Room Temperature |
| Physical and Chemical Properties | The tetrahydrate is a white crystalline powder. Soluble in 0.9 parts of water, almost insoluble in ethanol. |
D-Potassiumsodiumtartrate - Risk and Safety
| WGK Germany | WGK 3 |
D-Potassiumsodiumtartrate - Reference
| Reference Show more | 1. [IF=13.084] Dong Yang et al."Coordination between Electron Transfer and Molecule Diffusion through a Bioinspired Amorphous Titania Nanoshell for Photocatalytic Nicotinamide Cofactor Regeneration."Acs Catal. 2019;9(12):11492–11501 |
D-Potassiumsodiumtartrate - Introduction
(5750.5-2006 Standard Test Method for Drinking Water-Inorganic Non-metallic Index 9.1.3.8)
Last Update：2022-10-16 17:31:15
D-Potassiumsodiumtartrate - Reference Information
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Application | its piezoelectric properties can be used to make a piezoelectric element for radio and cable radio receiver, pickup, but it is easy to decompose, performance is brittle, soluble in water and other shortcomings. It is also used in baking powder, pharmaceuticals, mirror plating and as a chemical reagent. |
| Overview | potassium sodium tartrate (molecular formula KNaC4H4O6 · 4H2O) also known as sodium potassium tartrate, Roche salt, Rochelle salt, it is a double salt of sodium tartrate and potassium tartrate. It is a colorless to blue-white orthorhombic crystal, soluble in water, slightly soluble in alcohol, salty and cool, slightly alkaline aqueous solution. Specific gravity 1.79, pH 6.8-8, melting point 70-80°C, slightly weathered in hot air. At 60°C, partial crystal water was lost; At 100°C, 3 water molecules were lost; At 215°C, all crystal water became anhydrous; Potassium sodium tartrate was divided into D-type and DL-type, D is a colorless transparent crystal, solubility in water 30 deg C 100 ml 138.3g. Insoluble in alcohol. It can form soluble complexes with copper, iron, lead, chromium, polyamide and other metal ions in alkaline solution. Form DL is a white fine-grained crystal with a density of 1.783g/cm3. Melting point 100 °c. In the hot air weathering, 60 deg C to lose part of the crystal water, 215 deg C to lose all crystal water. Solubility in water 1.00 ml at 30 °c was 117.62G insoluble in alcohol. With complexation. Two moles of potassium hydrogen tartrate were dissolved in water and heated. One mole of sodium carbonate was added, filtered while hot, and the insoluble matter was dried and crystallized to obtain potassium sodium tartrate. It can be used as a laxative, a food additive, a piezoelectric element, and a chemical reagent for preparing a film reagent, a Biuret reagent, and a reducing agent for making a mirror. |
| reference quality index | [Codex Alimentarius (III)]] project Index content% ≥ 99.0-102.0 alkalinity qualified arsenic (As)%≤ 0.0003 heavy metals (Pb)%≤ 0.001 moisture% 21-26 [enterprise standard Zhejiang Q/HG079-81 (electroplating grade)] Project Index potassium sodium tartrate content% ≥ 98.0 chloride (Cl)%≤ 0.005 heavy metals (in Pb)%≤ 0.001 sulfate (SO4)%≤ 0.03 iron (Fe)%≤ 0.002 arsenic (As)%≤ 0.0002 aqueous solution reaction qualified water-insoluble substance% ≤ 0.01 |
| preparation method and production process | put the raw material tartaric acid into the cylinder, add twice the amount of water, heat and boil with steam, under constant stirring, dry sodium carbonate was slowly added and neutralized until no bubbles were generated. At this time, the solution was neutral with litmus paper test. Filter with a cloth bag while hot. The filtrate should be transparent or nearly transparent. The filtrate was transferred into an enamel bucket, heated and evaporated to a concentration of 38-42 wave degree of the solution, taken out and placed in a shallow dish (preferably 15-20cm in thickness), and allowed to stand at room temperature for 24 hours to naturally crystallize. The mother liquor was separated, the crystals were taken out, and washed once with cold water (the washing water was combined with the mother liquor and recovered) to obtain a crude potassium sodium tartrate product. The crude product is dissolved by heating with an appropriate amount of water (1-2 times), decolorized by adding activated carbon (the amount of activated carbon is 5-15% of the sample amount), stirred for 10 minutes, and then filtered (the filtrate is treated with crude crystals, recrystallization, the crystals should be colorless and transparent) separation of the mother liquor, air-dried after washing or drying at 50 Deg C to obtain the finished product. |
| the role and use of potassium sodium tartrate | used in the preparation of feline solution, Biuret reagent, masking agent, reducing agent determination, food additives, biochemical examination of serum proteins. Also used for printing industry plate, mirror; Hot water bottle industry as reducing agent; Electroplating industry as a complexing agent; Medicine as laxative; Telecommunications industry for crystal horn and microphone; Fertilizer industry ADA desulfurizer. |
| assay | determined as per GT-2 method. Each Ml of 0.5mol/L sulfuric acid is equivalent to potassium sodium tartrate (c4h4knao 6? 70.56mg) 4H2O. |
| toxicity | non-toxic. GRAS(FDA,§ 184.1804,2000). ADI 0~30 mg/kg(FAO/WHO,2001). |
| usage limit | FDA,§ 184.1804.(2000): GMP is limited. |
| Use | used as baking powder in food industry, used in plate making and mirror making in Printing Industry used in Ferling solution, the preparation of patchy solution is also used as a piezoelectric element used as baking powder in the food industry, plate making and mirror making in the printing industry, and hot water bottle industry as a reducing agent |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-09 20:52:54
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