ซัลฟามิกแอซิด
ซัลฟามิกแอซิด, กรดซัลฟามิก, Sulphamic acid, Sulfamic aicd
ชื่อเคมี : ซัลฟามิก เอซิด
ชื่ออื่นๆ :
สูตรเคมี : H2NSO3H
ประเทศ : ญี่ปุ่น ,ไต้หวัน
ลักษณะ : เป็นผลึกสีขาวแข็ง
การใช้งาน :
- อุตสาหกรรมเซรามิก
- อุตสาหกรรมโลหะ
- อุตสาหกรรมย้อมและพิมพ์
- อุตสาหกรรมฟอกขาว , ฟอกสี
- อุตสาหกรรมสิ่งทอ
- อุตสาหกรรมเครื่องใช้ไฟฟ้า
Product Name : Sulfamic Acid / ซัลฟามิก เอซิด
Other Name :
Formula : H2NSO3H
Origin : Japan ,Taiwan
Characteristics : White crystalline solid, non-volatile, non hygroscopic
Application :
- Ceramic Industry,
- Metal Industry,
- Dyeing and Printing Industry,
- Bleaching Industry,
- Textile Industry
- Electonic Industry
Sulfamic acid, also known as amidosulfonic acid, amidosulfuric acid, aminosulfonic acid, and sulfamidic acid, is a molecular compound with the formula H3NSO3. This colorless, water-soluble compound finds many applications. Sulfamic acid melts at 205 °C before decomposing at higher temperatures to H2O, SO3, SO2, and N2. Sulfamic acid (H3NSO3) may be considered an intermediate compound between sulfuric acid (H2SO4), and sulfamide (H4N2SO2), effectively - though see below - replacing an -OH group with an -NH2 group at each step. This pattern can extend no further in either direction without breaking down the -SO2 group. Sulfamates are derivatives of sulfamic acid.
Applications
Sulfamic acid is mainly a precursor to sweet-tasting compounds. Reaction with cyclohexylamine followed by addition of NaOH gives C6H11NHSO3Na, sodium cyclamate. Related compounds are also sweeteners, see acesulfame potassium.
Sulfamates have been used in the design of many types of therapeutic agents such as antibiotics, nucleoside/nucleotide human immunodeficiency virus (HIV) reverse transcriptase inhibitors, HIV protease inhibitors (PIs), anti-cancer drugs (steroid sulfatase and carbonic anhydrase inhibitors), anti-epileptic drugs, and weight loss drugs.
Cleaning agent
Sulfamic acid is used as an acidic cleaning agent, sometimes pure or as a component of proprietary mixtures, typically for metals and ceramics. It is frequently used for removing rust and limescale, replacing the more volatile and irritating hydrochloric acid, which is however cheaper. It is often a component of household descaling agents, for example, Lime-A-Way Thick Gel contains up to 8% sulfamic acid and pH 2 - 2.2,[11] or detergents used for removal of limescale. When compared to most of the common strong mineral acids, sulfamic acid has desirable water descaling properties, low volatility, low toxicity. It forms water-soluble salts of calcium and ferric iron.
Importantly, sulfamic acid is preferable to use in household in comparison to hydrochloric acid for its intrinsic safety. If erroneously mixed with hypochlorite based products such as bleach, it does not form chlorine gas, where the most common acids would; the reaction (neutralization) with NH3, produces a salt as depicted in the section above.
Its also finds applications in the industrial cleaning of dairy and brew-house equipment. Although it is considered less corrosive than hydrochloric acid, corrosion inhibitors are often added to commercial cleansers of which it is a component. Some of its domestic use, e.g. Easy-Off, for descaling include home coffee and espresso equipment and in denture cleaners.
Other uses
Catalyst for esterification process
Dye and pigment manufacturing
Herbicide
Coagulator for urea-formaldehyde resins
Ingredient in fire extinguishing media. Sulfamic acid is the main raw material for ammonium sulfamate which is a widely used herbicide and fire retardant material for household product.
Pulp and paper industry as a chloride stabilizer
Synthesis of nitrous oxide by reaction with nitric acid
The deprotonated form (sulfamate) is a common counterion for nickel(II) in electroplating.
Silver polishing
According to the label on the consumer product, the liquid silver cleaning product TarnX contains thiourea, a detergent, and sulfamic acid.
Sulfamic Acid Information：
Trade Name: Sulfamic acid
Chemical Name: Sulfamic acid
IUPAC Nomenclature: Amidosulfuric acid
Synonyms: Amidosulfonic acid, Aminosulfonic acid
Chemical Family: Inorganic acid
Chemical Formula: NH2SO3H
SULFAMIC ACID is a dry, non-volatile, non-hygroscopic, odorless, white crystalline, stable acid .It is moderately soluble in water and forms strongly acidic aqueous solution that is comparable in acidity to the common strong mineral acids but it may be easily handled and stored in the dry form. At room temperature ,dilute aqueous sulfamic acid solution is stable for a long time but rapid hydrolysis occurs at elevated temperatures .Its solution is less corrosive toward metals than other mineral acid. Because of advantages such as handling ease, solubility and low corrosiveness, sulfamic acid is used for many diversified applications.
PHYSICAL PROPERTIES
Molecular Weight 97.1
Melting Point 205℃
Decomposition 209℃
Specific Gravity 2.126
Bulk Density (loose) 1.0-1.2
Bulk Density(Parked) 1.0-1.6
Dissociation Constant: 0.101
Vapor Pressure: Not volatile
Evaporation Rate: Not volatile
Odor: None
Uses
Acid Cleaning
For descaling agent of:
Cooling towers (air conditioners)
Marine equipment (sea water evaporators)
Water wells
Oil, gas Wells
Dairy equipment (pipeline milkers, milk evaporators)
Brewery equipment
Sugar evaporators
Pulp and paper equipment
Desalination equipment
General industrial equipment (boilers, condensers, heat exchangers, evaporators, etc.)
Household equipment
Bleaching for Pulp
Sulfation and Sulfonation
Dyes and Pigments
Electroforming, Electroplating, and Electrorefining
pH Adjustment
Curing Agent for Phenol, Melamine, and Urea Resin
In Anodizing
For Manufacture of Bubbling Pipe Cleaner
Sulfamic acid is also known as: Amidosulfonic acid, Aminosulfonic acid, Imidosulfonic acid, 5329-14-6, Sulfamidic acid, Amidosulfuric acid, Jumbo, Sulfaminic acid Molecular Formula: H3NO3S Molecular Weight: 97.09372
Molecular Formula: NH2SO3H.
Molecular weight:97.09
Characteristics:
--White orthorhombic cystal.
Nonvolatile, nonhygroscopic,smell-less. High stability at normal tenperature and can maintain original quality for several years. Freely soluble in water and liquid ammonia,strongly acidic in water solution.
--Slightly soluble in methanol,insolublein ethanol and ether.Characteristics of double funcitional group of amidogen and sulphonic radical, may go on chemical reaction with many matters.
--Melting point is 205oC,decomposing temperature is 209 oC.
Use: Metal parts cleaning,getting away oxidize surface.Slightly corrosive to metal, usedto flush boiler, and sterilize bacterium in water.Bleach fibre,wood and paper. Remove nitrite in tobacco.Raw material for pesticide intermediate,ramification of sulfamic acid.
Packaging Storage: Knitting bags with plastic liners,25kg per bag.or Flexible Containers with 500kg,1000kg. Stored in dry and cleanplace. Protection from sunshine,rain moisture and a acute.
Technological index
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