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Mordant Orange 1, molecular formula C13H9N3O5, CAS 2243-76-7, also known as p-nitrophenylazosalicylic acid or sodium salt, Alizarin Yellow R, is a brownish yellow or orange brown crystalline or powder. The formation of this color is mainly due to the nitrophenylazo group and salicylic acid group in its molecular structure. Soluble in water and ethanol, slightly soluble in acetone, difficult to dissolve in other solvents. The aqueous solution is brownish yellow in color. It is mainly used as an organic reagent and coloring agent. This coloring process can be used to color certain colorable die cast aluminum alloys, forming a good and stable film layer, and has certain corrosion resistance, electrical insulation, and surface hardness. It is an important acid-base indicator with a color change range between pH 10.0 (yellow) and 12.0 (red). This property makes it widely used in fields such as chemical analysis and biological experiments to indicate changes in the acidity or alkalinity of solutions. Used in fields such as chemical analysis and biological experiments, it indicates changes in the acidity or alkalinity of solutions, and is also used for coloring metal surfaces, giving metals unique colors and visual effects.
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Chemical Formula |
C13H9N3O5 |
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Exact Mass |
287 |
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Molecular Weight |
287 |
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m/z |
287 (100.0%), 288 (14.1%), 288 (1.1%), 289 (1.0%) |
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Elemental Analysis |
C, 54.36; H, 3.16; N, 14.63; O, 27.85 |
Mordant Orange 1, also known as p-nitrophenylazosalicylic acid or sodium salt, or Alizarin Yellow R, is mainly used as an organic reagent and coloring agent. A process for bronze coloring of die cast aluminum alloys. This coloring process can be used to color certain colorable die cast aluminum alloys, forming a good and stable film layer, and has certain corrosion resistance, electrical insulation, and surface hardness.
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1. Used for preparing a highly sensitive pH test paper
In the field of chemistry, the use of test paper is extremely frequent. It is a type of paper that has been impregnated with chemicals and can detect the presence of certain substances in liquids or gases through its color change. CN201110420648.0 provides a highly sensitive pH test paper and its preparation method, which solves the problems existing in the prior art. The color strip of the pH test paper is made of a specially made pH base paper, which is impregnated with a special reagent solution and then refined and processed by hot air constant temperature drying. The special reagent solution is adjusted to a pH value of 6-7.5, ensuring that the pH base paper is not affected by acid and alkali corrosion and the paper quality is not affected. The pH base paper can uniformly, firmly, and stably adsorb the special reagent solution, ensuring that the pH 1-14 test paper adsorbed with the special reagent solution is not easily affected by the environment and will not deteriorate or fail, thereby effectively improving the stability and accuracy of the pH 1-14 test paper. It is convenient and simple to use, and saves resources.
The technical solution is as follows: a high-sensitivity pH test paper, which includes a color developing strip for detection and a standard color plate. The color developing strip is made of pH base paper, soaked in reagent solution, and then dried at a constant temperature with hot air; The reagent solution contains an indicator, and the formula of the indicator includes: 80 grams of bromothymol blue, 50 grams of thymol blue, 30 grams of acidic meta amine yellow, 25 grams of meta methyl red, 5 grams of bromocresol green, 12 grams of nitrate yellow, 40 grams of o-cresol phthalein, 3 grams of phenolphthalein, 80 grams of sodium p-nitrophenylazo salicylate, 40 grams of dadan yellow, 2 grams of fluorescent orange red, 1 gram of 4-nitrophenylazo-1-naphthol-3.6-disulfonic acid sodium 5% solution, dissolved in 100 kilograms of 30% ethanol aqueous solution.
A high-sensitivity pH test paper preparation method: using the high-sensitivity pH test paper as described above, adjust the reagent solution to a pH value of 6-7.5, then uniformly soak the pH base paper, and then dry it at a constant temperature with hot air.
2. Used for preparing soy sauce color standard samples
At present, there is no standard for the color of soy sauce, nor is there a chromaticity standard sample for the inherent color of soy sauce. At present, there are many methods for determining the color of soy sauce, but they all have problems such as being cumbersome, difficult to master, inconsistent, unstable, not intuitive, and not easy to promote and popularize.
The purpose of CN97116683.8 providing a soy sauce color standard sample is to:
Provide technical basis for establishing standards for soy sauce color.
Unified calibration method for soy sauce color.
The cumbersome, difficult to master, inconsistent, unstable, non intuitive, and difficult to popularize and apply methods for measuring soy sauce color are chaotic and backward.
To provide a simple, direct, and intuitive color calibration basis and measures for combating and inspecting counterfeit, inferior, fake, and soy sauce Mordant Orange 1.
The color standard of soy sauce in the present invention is characterized by accurately weighing 4.0520 grams of medium orange, 0.1200 grams of acid red, 0.0360 grams of acid yellow, 0.0810 grams of acid blue, and 0.0139 grams of acid brilliant blue. Add 500ml to 1000ml of distilled water and boil for 5 to 10 minutes; Dissolve all five pigments. Dilute to 1000 milliliters and filter; Add 10ppm toluene as a preservative; Leave it for more than 12 hours. Part of it is filled into glass bottles with excellent transparency as a chromaticity; The other part is diluted to varying degrees and then filled into glass bottles with excellent transparency, serving as different shades.
Seal each colored glass bottle that has been filled separately. Arrange the filled and sealed glass bottles in order of color intensity; Arrange them in order from rich to light, forming a color gradient tube for each color stage as a whole. Then arrange according to the color scale, and sequentially load the color scale tubes into the standard sample box to make the finished product of soy sauce color standard. The use of the color standard for soy sauce in the present invention is extremely convenient, simple, and intuitive. Just put the finished soy sauce into a test tube and compare it with the standard sample of soy sauce color according to the present invention. Easy to popularize and promote applications. To combat and inspect counterfeit, inferior, fake, and soy sauce products, a simple, direct, intuitive, and effective color calibration basis and measures are provided. The present invention is simple to manufacture, low in cost, and has strong stability.
3. Analysis of Magnesium Content in Aluminum Alloys
CN201310530418.9 provides an effective, rapid, and accurate method for analyzing the magnesium content in aluminum alloys. The analysis method for magnesium content in aluminum alloy described in the present invention uses a combined masking agent to mask residual interfering elements, EDTA titration to determine the magnesium content in aluminum alloy, and a mixed indicator is used for analysis. The mixed indicator is a solution of chromium black T, alizarin yellow R, magenta, and hydroxylamine hydrochloride, and the solution uses a mixed solution of triethanolamine solution and ethanol as the solvent. The preparation method of the mixed indicator is as follows: mix 35mL of triethanolamine solution with 20mL of ethanol, add 0.35g of chromium black T, 0.05g of alizarin yellow R, 0.05g of magenta, and 0.2g of hydroxylamine hydrochloride, and stir to dissolve. The triethanolamine solution is a mixture of triethanolamine and water in a volume ratio of 1:1.
The analysis method for magnesium content in the aluminum alloy comprises the following steps:
Add aluminum alloy samples to NaOH solution, add H2O2, react at 50-70 ℃ for 0.5-3 hours, filter, and wash the filter cake with water;
Dissolve the filter cake in hydrochloric acid solution, add a combination masking agent, and adjust the pH of the solution to 9.5-10 using an ammonia buffer; Add mixed indicator to obtain solution A;
Titrate solution A with EDTA until the solution changes from burgundy to blue, which is the endpoint of titration; The mass fraction of magnesium is calculated according to the formula, where: C-EDTA standard titration solution concentration, mol/L;
What are the side effects of this compound?
1.Potential impact on human health
Skin and eye contact
Mordant Orange 1 may cause irritation to the skin and eyes. Therefore, when handling this substance, it is necessary to wear appropriate protective equipment such as gloves and goggles to prevent direct skin and eye contact.
Inhalation or ingestion
If accidentally inhaled or ingested, it may pose a risk to human health. This includes possible digestive discomfort, respiratory problems, and other potential systemic impacts. Therefore, it is necessary to ensure that appropriate safety measures are taken during use and storage to avoid inhalation or ingestion of the substance.
2.Environmental risk
Toxicity to aquatic organisms
This compound may have toxic effects on aquatic organisms. Therefore, when handling and using this substance, it must be ensured that it will not be released into the environment, especially into water bodies.
Groundwater pollution
Due to its solubility in water, if leaked in large quantities or mishandled, it may contaminate groundwater. This will pose a potential threat to the ecological environment and human health.
3.Precautions for use
Personal protection
When using, appropriate personal protective equipment should be worn, including gloves, goggles, respiratory protective equipment, etc.
Storage conditions
This substance should be stored in a cool, dry place and ensure that the container is well sealed to prevent leakage and deterioration.
Waste disposal
For waste containing it, it should be disposed of in accordance with local environmental regulations and should not be casually discarded or discharged into the environment.
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In the vast history of synthetic dyes, some names shine like brilliant stars, illuminating humanity's journey from natural constraints to chemical freedom. Mordant Orange 1, a seemingly ordinary code name in chemistry manuals and dyeing textbooks today, is an indispensable cornerstone of this history. Its discovery was not a sudden breakthrough, but a classic example of how multiple scientists transformed accidental observations into systematic science in the current of the times, ultimately giving birth to a completely new industry. Its story is closely intertwined with the genius inspiration of a young chemist, the smoke of a scientific competition, and the chemical nirvana of an ancient craft.
In 1856, an 18-year-old British chemist named William Henry Perkin made a futile attempt in his attic to synthesize the antimalarial drug quinine through chemical means. At that time, the theory of organic chemistry was still in its infancy, and his attempts were destined to fail. However, in an experiment of treating crude aniline with potassium dichromate, he obtained a purple, viscous precipitate. Most researchers would consider it a failed waste and discard it, but Perkin keenly noticed its excellent staining performance.
He dyed this purple substance onto a scarf and found that the color was exceptionally bright and long-lasting. This is the world's first artificially synthesized dye - Mauvein. Perkin did not immerse himself in "failure", but decisively gave up his studies and entered the business world, establishing factories to mass produce this "Perkin Purple". Its enormous commercial success was like a giant rock thrown into a calm lake, causing a huge wave in the entire European chemical community.
Perkin's greatness lies not only in his discovery of the first synthetic dye, but also in his revelation of an inexhaustible treasure - coal tar. Coal tar is a byproduct of the coking industry (providing coke for steel production), previously considered a headache inducing waste. Perkin proved that this black, viscous, and foul smelling "garbage mountain" is actually a treasure trove of aromatic organic compounds such as benzene, toluene, naphthalene, anthracene, etc. It is the starting point for synthesizing dyes, drugs, explosives, and even the entire modern organic chemistry industry.
FAQ
1. What is the primary use of Mordant Orange 1?
Mordant Orange 1 is an acidic medium dye, mainly used for dyeing wool, nylon and other protein fibers. Its characteristic is that it requires the use of metal mordants (such as chromates) to fix the color, in order to enhance color fastness (especially wash fastness and light fastness), and to produce stable composite colors. It is commonly used in carpets, wool textiles, etc.
2. What should be noted when using Mordant Orange 1?
- Mordant treatment: It must be carried out using metal salts (such as potassium dichromate) through pre-mordanting, simultaneous mordanting, or post-mordanting methods; otherwise, the color fastness will be poor.
- Environment and Safety: Traditional chromium mordant dyes may contain hexavalent chromium, which needs to be properly treated for wastewater; protective equipment must be worn during operation to avoid inhalation or contact.
- Color and Light Control: The final color tone is influenced by the type of mordant and process conditions; the process must be strictly standardized.
3. Does it apply to all types of fibers?
Not applicable. Primarily applicable to fibers containing amino/carbonic acid groups (such as wool, silk, nylon), but ineffective for cotton, polyester, etc. which lack binding sites. Other dye categories need to be selected instead.
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