CI NO 77510
Pigment Blue 27
CAS: 12240-15-2
Molecular Formula: C6Fe2KN6
CI NO 77510 - Names and Identifiers
| Name | Pigment Blue 27 |
| Synonyms | CI 75510 CI 77520 PARIS BLUE C.I. 77520 CI NO 7520 CI NO 77510 BERLIN BLUE Pigment Blue 27 C.I.Pigmentblue27 BERLIN BLUE SOLUBLE C.I. Pigment Blue 27 water-soluble,CI77520 BERLIN BLUE INSOLUBLE PRUSSIAN BLUE SOLUBLE PRUSSIAN BLUE INSOLUBLE Pigment blue 27 (C.I. 77510) ferrous potassium hexacyanoiron PRUSSIAN BLUE SOLUBLE, FOR MICROSCOPY |
| CAS | 12240-15-2 |
| InChI | InChI=1/6CN.2Fe.K/c6*1-2;;;/q;;;;;;-3;+2;+1/rC6FeN6.Fe.K/c8-1-7(2-9,3-10,4-11,5-12)6-13;;/q-3;+2;+1 |
CI NO 77510 - Physico-chemical Properties
| Molecular Formula | C6Fe2KN6 |
| Molar Mass | 306.89 |
| Boling Point | 25.7℃ at 760 mmHg |
| Solubility | Practically insoluble in water |
| Appearance | Blue powder |
| Storage Condition | Room Temprature |
| MDL | MFCD00135663 |
| Physical and Chemical Properties | dark blue powder. The relative density was 1.8. Insoluble in water, ethanol and ether, soluble in acid and alkali. The color light can be between dark blue and bright blue, with bright color, strong coloring power, strong diffusion, large oil absorption and slightly poor hiding power. The powder is hard and not easy to grind. It can resist light and dilute acid, but it decomposes when boiled with concentrated sulfuric acid. It is weak in alkali resistance, even dilute alkali can decompose it. It cannot be shared with a basic pigment. When heated to 170~180 °c, the crystal water begins to be lost, and when heated to 200~220 °c, the combustion will release the hydrogen cyanide acid. In addition to a small amount of additional materials that can improve the properties of the pigment, no filler is allowed. |
| Use | cheap dark blue inorganic pigment, a large number of coatings and printing ink and other industrial use, does not produce bleeding phenomenon. In addition to being used alone as a blue pigment, it can be combined with lead chrome yellow to form lead Chrome Green, which is a commonly used green pigment in paint. It can not be used in water-based paint because it is not resistant to alkali. Iron Blue is also used in copy paper. In plastic products, iron blue is not suitable as a colorant for polyvinyl chloride, because iron blue on the degradation of polyvinyl chloride, but suitable for low density polyethylene and high density polyethylene coloring. In addition, it is also used for painting, crayon and paint cloth, paint paper and other products of coloring. |
CI NO 77510 - Risk and Safety
| Safety Description | S22 - Do not breathe dust. S24/25 - Avoid contact with skin and eyes. |
| WGK Germany | 3 |
CI NO 77510 - Reference
| Reference Show more | 1. Guo, Qiu et al. “Mouse lymphatic endothelial cell targeted probes: anti-LYVE-1 antibody-based magnetic nanoparticles.” International journal of nanomedicine vol. 8 (2013): 2273-84. doi:10.2147/IJN.S45817 2. Zuo, Li, Wei Niu, and Anqi Li. "Isolation of circulating tumor cells of ovarian cancer by transferrin immunolipid magnetic spheres and its preliminary clinical application." Nano Life 9.01n02 (2019): 1940001.https://doi.org/10.1142/S1793984419400014 3. Cao, Yan, et al. "High-efficiency EpCAM/EGFR-PLGA immunomagnetic beads with specific recognition on circulating tumor cells in colorectal cancer." Journal of Biomedical Nanotechnology 13.7 (2017): 758-766.https://doi.org/10.1166/jbn.2017.2394 |
CI NO 77510 - Nature
Open Data Verified Data
dark blue powder. The relative density was 1.8. Insoluble in water, soluble in acid and alkali. There are two kinds of color light: cyan light and red light, with bright color, strong coloring power and slightly poor hiding power. The powder is hard and not easy to grind. Can be sun-resistant, acid-resistant, but in the case of concentrated sulfuric acid boiling decomposition I alkali resistance is weak, even dilute alkali can make its decomposition. It cannot be shared with a basic pigment. When heated to 170~180 °c, the crystal water begins to be lost, and when heated to 200~220 °c, the combustion will release the hydrogen cyanide acid. In addition to a small amount of additives that can improve the properties of the pigment, no filler, such as barium sulfate, calcium carbonate, is allowed.
Last Update：2024-01-02 23:10:35
CI NO 77510 - Preparation Method
Open Data Verified Data
yellow blood salt method: the double salt of ferrous ferrocyanide is formed by reacting potassium salt of yellow blood with ferrous sulfate in slightly acidic solution, and then oxidized with sulfuric acid and potassium chlorate to form double salt of ferric ferrocyanide and potassium ferrocyanide. If the yellow blood salt sodium is used to make iron blue, the generated double salt should be ammonium instead of sodium, that is, iron ferrocyanide and ammonium ferrocyanide double salt are generated, therefore, according to different raw materials, iron blue is divided into potassium iron blue and ammonium iron blue. The above double salt was filtered, rinsed, dried and pulverized to obtain a dark blue iron blue pigment.
Last Update：2022-01-01 11:06:59
CI NO 77510 - Introduction
It is difficult to fade, originally invented by the Germans, so it is called Prussian Blue! Prussian blue K[Fe Ⅱ(CN)6Fe Ⅲ] (Ⅱ means Fe2 ,Ⅲ means Fe3) Prussian blue Prussian blue is a non-toxic pigment. Thallium can replace potassium on Prussian blue and form insoluble substances to be excreted with feces. It has a certain effect on the treatment of oral acute and chronic thallium poisoning.
Last Update：2022-10-16 17:12:51
CI NO 77510 - Use
Open Data Verified Data
dark blue pigment. For paint, ink, painting, crayons, and paint cloth, paint paper, plastic products and other coloring. In the medical treatment of thallium can be replaced by Prussian blue on the potassium after the formation of insoluble substances discharged with the feces, the treatment of oral acute and chronic thallium poisoning has a certain effect.
Last Update：2022-01-01 11:06:58
CI NO 77510 - Safety
Open Data Verified Data
hydrogen cyanide and ammonia produced after the combustion of iron blue are highly toxic, and a small amount of inhalation will faint and unconsciousness. Hydrogen cyanide produced after the combustion of iron blue is easy to be exploded. Packed with an iron drum, a cardboard drum, a fiberboard drum or a woven bag lined with a polyethylene plastic bag, the net weight of each barrel (bag) is 20kg, 25kg, 30kg. Should be stored in a ventilated, dry warehouse. Pay attention to moisture. Not with acid, alkali and oxidant co-storage and transportation, should prevent sun exposure, away from fire and heat source. When there is a fire, it can be suppressed by water and sand.
Last Update：2022-01-01 11:06:59
CI NO 77510 - Reference Information
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| use | cheap dark blue inorganic pigments, which are widely used in coatings, ink and other industries, do not produce color seepage. In addition to being used alone as a blue pigment, it can be combined with lead chrome yellow to form lead chrome green, which is a commonly used green pigment in paints. Because it is not alkali resistant, it cannot be used in water-based paint. Iron blue is also used in carbon paper. In plastic products, iron blue is not used as a colorant for polyvinyl chloride, because iron blue degrades polyvinyl chloride, but it is suitable for coloring low-density polyethylene and high-density polyethylene. In addition, it is also used for coloring painting, crayons, painted paint cloth, paint paper and other products. |
| production method | the reaction equation is as follows: generate white pulp 2FeSO4 + xK4Fe(CN)6 → 2K2SO4 + Fe2Fe(CN)6 (x-1)K4Fe(CN)6 white pulp oxidation 6 FeK2Fe(CN)6+3H2SO4 + KClO3 → 6FeKFe(CN)6 + KCl + 3H2O +3K2SO4 potassium iron blue formula: k4Fe (CN)6 · 3H2O 100kg, FeSO4 · 7H2O 76kg, H2SO4 40kg, KClO3 5.5kg ammonium iron blue formula: Na4Fe(CN)6 · 10H2O 100kg, FeSO4 · 7H2O 66kg, H2SO4 35kg, KClO3 5kg, (NH4)2SO2 33kg reaction solution preparation. Dissolve potassium ferrocyanide or sodium with water to a concentration of 100g/L, and heat to 70°C with steam. Ferrous sulfate is also prepared into a solution of 100g/L, and sulfuric acid is used to adjust the pH value to about 1.5. When preparing ammonium iron blue, dissolve ammonium sulfate in ferrous sulfate. White pulp formation and hot cooking. At 70 ℃ and under stirring, the ferrous sulfate solution is added in 10~15min. After the ferrous sulfate is added, the temperature is immediately increased to above 95 ℃, and the filtrate of the white slurry is filtered to verify the residual amount of ferrous sulfate. Under normal circumstances, the remaining sulfuric acid in the mother liquor should be 1.5~2g/L. If this amount is exceeded, potassium ferrocyanide or sodium should be added; if it is insufficient, ferrous sulfate should be added. Acid cooking and oxidation of white pulp. After the white pulp is formed, the diluted sulfuric acid is added to the acid boil, and the acid boil temperature is above 95 ℃ and kept for 2 hours. The acid boiling temperature is high and the time is long, and the iron blue has strong tinting power, softer texture and better brightness. After the acid cooking, dilute the white pulp with cold water to 1.8 m3, adjust the temperature to 70 ℃, slowly add the potassium chlorate solution dissolved in water with a concentration of 10% within 20min at 70 ℃, and continue to oxidize at 70 ℃ for 3h after adding. The end point of oxidation is marked by no more divalent iron in the mother liquor. After the iron blue is made, the water-soluble salt must be thoroughly washed to ensure the dispersibility, durability and other good performance of the product. The method of first plate and frame pressure filtering and then washing with water can be adopted. After filtering and washing, the iron blue is dried at 60~70 ℃, and then crushed. It can also be refined to improve the performance of pigments. The simplest finished product is surfactant treatment. Such as zinc naphthenate. The zinc naphthenate is diluted with solvent gasoline, directly added to the iron blue slurry that has not been washed, and fully stirred to adsorb the zinc naphthenate on the iron blue particles, and then filtered and washed. The function of zinc naphthenate is not only to improve the lipophilicity of iron blue and easy to disperse, but also to prevent iron blue from fading after storage in paint. |
Last Update：2024-04-09 21:04:16
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Product Name: Pigment Blue 27 Request for quotation
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Product Name: Prussian blue soluble Visit Supplier Webpage Request for quotation
CAS: 12240-15-2
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CAS: 12240-15-2
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