As a leading manufacturer over 20 years. Our exquisite craftsmanship can meet all your requirements!
You are here: Home » Blog » Is Sulfamic Acid hazardous?

Is Sulfamic Acid hazardous?

Views: 16     Author: Site Editor     Publish Time: 2022-07-08      Origin: Site


facebook sharing button
twitter sharing button
line sharing button
wechat sharing button
linkedin sharing button
pinterest sharing button
sharethis sharing button

What is Sulfamic Acid ?

Sulfamic acid, also known as amidosulfonic acid, amidosulfuric acid, aminosulfonic acid, sulphamic acid and sulfamidic acid, is a molecular compound with the formula H3NSO3. This colourless, water-soluble compound finds many applications. Sulfamic acid melts at 205 °C before decomposing at higher temperatures to water, sulfur trioxide, sulfur dioxide and nitrogen.

Sulfamic acid (H3NSO3) may be considered an intermediate compound between sulfuric acid (H2SO4), and sulfamide (H4N2SO2), effectively replacing a hydroxyl (–OH) group with an amine (–NH2) group at each step. This pattern can extend no further in either direction without breaking down the sulfonyl (–SO2–) moiety.

Is Sulfamic Acid hazardous?

This chemical that Sulfamic Acid is considered hazardous by the 2012 OSHA Hazard Communication Standard

When you contact,you will severely iritate and bum the skin and eyes with possible eye damage.  

Toxicity protection: Sulfamic Acid is low in toxicity. It has a certain stimulating effect on the skin and the eyes. Production equipment should be closed, and operators should wear good protective equipment.

Safety: Dust or solution is irritating to the eyes and skin and can cause burns. The maximum allowable concentration was 10 mg/m3. eyes should be flushed with water when stimulated, and serious cases should seek medical treatment. Water should also rinse during skin contact, and then wash thoroughly with soap. At the entrance, gargle immediately and send it to the hospital for quick treatment. Packaging in wooden boxes lined with polyethylene plastic bags with a net weight of 25 kg each. Store in a cool, ventilated and dry place. The packaging shall be sealed and damp-proof. Prevent rain and sunlight during transportation. Wear gas mask and gloves when disposal of escaped materials, sweep them with sand or rinse with water. On fire, use water, sand and fire extinguishers.



Is Sulfamic Acid safe for toilets?

A properly working toilet is a necessity in modern households. Toilets can gunk up or develop clogs for numerous reasons, resulting in a lack of function or even a nasty overflow of water. Cleaning out a toilet drain with a chemical substance, such as sulfuric acid, can often unclog the blockage and restore function to your toilet. However, you'll need to proceed with caution, as sulfuric acid is an extremely toxic substance.

A clogged toilet is an inconvenience as it renders your toilet useless until the clog is removed.

You should be careful when using Sulfamic Acid to dredge the toilet.


Is Sulfamic Acid a strong acid?

Sulfamic acid is a moderately strong acid, Ka = 0.101 (pKa = 0.995).

Aqueous solutions of sulfamic acid are unstable and slowly hydrolyze to ammonium bisulfate, but the crystalline solid is indefinitely stable under ordinary storage conditions.

Sulfamic acid reacts with nitrous acid to give nitrogen, while reaction with nitric acid, it affords nitrous oxide:

HNO2 + H3NSO3 → H2SO4 + N2 + H2O

HNO3 + H3NSO3 → H2SO4 + N2O + H2O

Upon heating sulfamic acid will react with alcohols to form the corresponding organosulfates.

Refluxing sulfamic acid with methanol will yield methylamine.

Sulfamic acid melts at 205 °C before decomposing at higher temperatures to water, sulfur trioxide, sulfur dioxide and nitrogen.

H3NSO3 → H2O + SO3 + SO2 + N2

What is Sulfamic Acid used for?

Cleaning agent

Sulfamic acid is used as an acidic cleaning agent and descaling agent sometimes pure or as a component of proprietary mixtures, typically for metals and ceramics. For cleaning purposes, there are different grades based on application such as GP Grade, SR Grade and TM Grade. It is frequently used for removing rust and limescale, replacing the more volatile and irritating hydrochloric acid, which is cheaper. It is often a component of household descalant, for example, Lime-A-Way Thick Gel contains up to 8% sulfamic acid and has pH 2.0–2.2, 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, and low toxicity. It forms water-soluble salts of calcium and ferric iron.

Sulfamic acid is preferable to hydrochloric acid in household use, due to its intrinsic safety. If inadvertently mixed with hypochlorite based products such as bleach, it does not form chlorine gas, whereas the most common acids would; the reaction (neutralisation) with ammonia, produces a salt, as depicted in the section above.

It also finds applications in the industrial cleaning of dairy and brewhouse equipment. Although it is considered less corrosive than hydrochloric acid, corrosion inhibitors are often added to the commercial cleansers of which it is a component. It can be used as a descalant for descaling home coffee and espresso machines and in denture cleaners.

Other uses

  • Catalyst for esterification process

  • Dye and pigment manufacturing

  • Herbicide

  • Descalant for scale removal

  • 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 products.

  • 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.

  • Used to separate nitrite ions from mixture of nitrite and nitrate ions( NO3−+ NO2−) during qualitative analysis of nitrate by Brown Ring test.

Is Sulfamic Acid hazardous?

This chemical that Sulfamic Acid is considered hazardous by the 2012 OSHA Hazard Communication Standard

When you contact,you will severely iritate and bum the skin and eyes with possible eye damage.

What is the storage condition for Sulfamic Acid

Sulfamic Acid store in Corrosive Area with other corrosive items. Store in a dedicated corrosive cabinet.

Sulfamic Acid store in a cool, dry, well-ventilated, locked store room away from incompatible materials.


What is the preparation procedure for Sulphamic Acid?

Sulphamic Acid should always be added to water, never add water to sulfamic acid.

At room temperature, diluted aqueous Sulphamic Acid is stable for a long period of time but hydrolysis occurs at elevated temperatures.

Concentrated sulfamic acid can be corrosive and can cause burns on the skin when it is not properly handled. This chemical is unique because it not only causes chemical burns, but also secondary thermal burns as a result of dehydration. It is vital to use proper PPE such as Rubber gloves, full clothing, rubber apron, and eye and face protection when mixing to avoid contact with unprotected skin. Contaminated clothing should be washed before being used again.

Is Sulphamic Acid hazardous to septic systems

Sulphamic acid is a cleaning agent on its own, and can also be found as a compound in various cleaning products. It is best suited to use on metals and ceramics.

Sulphamic acid is also used to remove rust and lime scale for pH control, cleaning and polishing stainless steel and other metals. It is safe to use as a cleaning agent in food processing plants such as breweries and dairy factories. SULPHAMIC ACID is safe to use in septic systems.

Sulphamic acid is safe to use on hard surfaces such as shower screens, tiles, taps, sinks, toilets, baths, spas, and benchtops made from acrylic, chrome, stainless steel, ceramics, and fibreglass, that are found in bathrooms, kitchens, and laundries.Sulphamic acid must not be used on marble surfaces.


Where to buy Sulfamic Acid

Here at QIDI Chem we have Sulfamic Acid for sale. We export worldwide, so you can contact us for a FREE quotation via email address or send a message on WhatsApp for a fast response at +86-139-1500-4413.If you don't want to address email, click the QI DI chem for more information about the product.

Apply Our Best Quotation
Contact us


Quick Links

Contact Us

Aozun Chemical                   
Your trustworthy chemical brand
Add: 128-1-16 HuaYuan Street, Wujin District, Chang Zhou City, China.
TEL: +86-519-83382137  
TAX: +86-519-86316850