5329-14-6

  • Product NameSulfamic acid
  • Molecular FormulaH3NO3S
  • Molecular Weight97.0947
  • Purity99%
  • Appearancewhite crystalline solid
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Product Details

Quick Details

  • CasNo: 5329-14-6
  • Molecular Formula: H3NO3S
  • Appearance: white crystalline solid
  • Purity: 99%

Top Quality Chinese Manufacturer supply 5329-14-6 Sulfamic acid

  • Molecular Formula:H3NO3S
  • Molecular Weight:97.0947
  • Appearance/Colour:white crystalline solid 
  • Vapor Pressure:0.8Pa at 20℃ 
  • Melting Point:215-225 °C (dec.)(lit.) 
  • Refractive Index:1.553 
  • Boiling Point:247oC 
  • PKA:-8.53±0.27(Predicted) 
  • Flash Point:205oC 
  • PSA:88.77000 
  • Density:1.913 g/cm3 
  • LogP:0.52900 

Sulfamic acid(Cas 5329-14-6) Usage

Reactions

Sulfamic acid is a strong acid that reacts with many basic compounds. It is heated to above the melting point (209°C) under normal pressure to begin to decompose, and continues to be heated to above 260°C to decompose into sulfur trioxide, sulfur dioxide, nitrogen, hydrogen and water.(1) Sulfamic acid can react with metals to form transparent crystalline salts. Such as:2H2NSO3H+Zn→Zn(SO3NH2)2+H2.(2) Can react with metal oxides, carbonates and hydroxides:FeO+2HSO3NH2→Fe(SO3NH2)2+H2O2CaCO3+2HSO3NH2→Ca(SO3NH2)2+H2O+CO23Ni(OH)2+2HSO3NH2→Ni(SO3NH2)2+H2O.(3) Can react with nitrate or nitrite:HNO3+HSO3NH2→H2SO4+N2O+H2O2HNO2+HSO3NH2→H2SO4+N2+H2O.(4) Can react with oxidants (such as potassium chlorate, hypochlorous acid, etc.): KClO3+2HSO3NH2→2H2SO4+KCl+N2+H2O22HOCl+HSO3NH2→HSO3NCl2+2H2O

Air & Water Reactions

Moderately soluble in water [Hawley].

Reactivity Profile

Sulfamic acid reacts exothermically with bases. Aqueous solutions are acidic and corrosive.

Hazard

Toxic by ingestion.

Health Hazard

TOXIC; inhalation, ingestion or skin contact with material may cause severe injury or death. Contact with molten substance may cause severe burns to skin and eyes. Avoid any skin contact. Effects of contact or inhalation may be delayed. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause pollution.

Fire Hazard

Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. Some are oxidizers and may ignite combustibles (wood, paper, oil, clothing, etc.). Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated.

Flammability and Explosibility

Nonflammable

Safety Profile

Poison by intraperitoneal route. Moderately toxic by ingestion. A human skin irritant. A corrosive irritant to skin, eyes, and mucous membranes. A substance that migrates to food from packaging materials. Violent or explosive reactions with chlorine, metal nitrates + heat, metal nitrites + heat, fuming HNO3. When heated to decomposition it emits very toxic fumes of SOx and NOx. See also SULFONATES.

Potential Exposure

Sulfamic acid is used in metal and ceramic cleaning, bleaching paper pulp; and textiles metal; in acid cleaning; as a stabilizing agent for chlorine and hypochlorite in swimming pools; cooling towers; and paper mills.

Shipping

UN2967 Sulfamic acid, Hazard class: 8; Labels: 8-Corrosive material.

Purification Methods

Crystallise NH2SO3H from water at 70o (300mL per 25g), after filtering, by cooling a little and discarding the first batch of crystals (about 2.5g) before standing in an ice-salt mixture for 20minutes. The crystals are filtered off by suction, washed with a small quantity of ice cold water, then twice with cold EtOH and finally with Et2O. Dry it in air for 1hour, then store it in a desiccator over Mg(ClO4)2 [Butler et al. Ind Eng Chem (Anal Ed) 10 690 1938]. For the preparation of primary standard material see Pure Appl Chem 25 459 1969.

Incompatibilities

The aqueous solution is a strong acid. Reacts violently with strong acids (especially fuming nitric acid), bases, chlorine. Reacts slowly with water, forming ammonium bisulfate. Incompatible with ammonia, amines, isocyanates, alkylene oxides; epichlorohydrin, oxidizers.

Application

Sulfamic acid, the monoamide of sulfuric acid, is a strong inorganic acid. It is generally used in chemical cleaning processes like removal of nitrites, carbonate- and phosphate-containing deposits.Sulfamic acid can be used as a catalyst in:Friedlander quinoline synthesis.Liquid Beckmann rearrangement for the synthesis of amides from ketoximes.The preparation of α-aminophosphonates via a three-component reaction between aldehydes, amines, and diethyl phosphite.

Definition

ChEBI: Sulfamic acid is the simplest of the sulfamic acids consisting of a single sulfur atom covalently bound by single bonds to hydroxy and amino groups and by double bonds to two oxygen atoms. It is a strong acid, readily forming sulphamate salts, which is extremely soluble in water and normally exists as the zwitterion H3N+. SO3–.

General Description

Sulfamic acid appears as a white crystalline solid. Density 2.1 g / cm3. Melting point 205°C. Combustible. Irritates skin, eyes, and mucous membranes. Low toxicity. Used to make dyes and other chemicals. It is used as a raw material for the preparation of a synthetic sweetener i.e, sodium cyclohexylsulfamate.

InChI:InChI=1/H3NO3S/c1-5(2,3)4/h(H3,1,2,3,4)

5329-14-6 Relevant articles

Kinetics and thermodynamics of the gas phase reaction SO3 + NH3 + N2 ? H3NSO3 + N2

Lovejoy, Edward R.

, p. 4950 - 4953 (1997)

The kinetics of the gas phase reaction S...

Introducing a mixed-valent dirhodium(ii,iii) catalyst with increased stability in C-H amination

Kornecki, Katherine P.,Berry, John F.

, p. 12097 - 12099 (2013/01/16)

A new mixed-valent Rh2II,III dimer, [Rh ...

Mechanisms of hydrolysis of phenyl- and benzyl 4-nitrophenyl-sulfamate esters

Spillane, William J.,Thea, Sergio,Cevasco, Giorgio,Hynes, Michael J.,McCaw, Cheryl J. A.,Maguire, Neil P.

supporting information; experimental part, p. 523 - 530 (2011/03/17)

The kinetics of hydrolysis at medium aci...

Preparation of N1-(2'-pyridyl)-1,2-propanediamine sulfamic acid and its use in the synthesis of biologically active piperazines

-

, (2008/06/13)

A process for making an N1-(2′-pyridyl)-...

Kappa agonist compounds and pharmaceutical formulations thereof

-

, (2008/06/13)

Compounds having kappa opioid agonist ac...

5329-14-6 Process route

4-nitrophenyl sulfamate
108555-00-6

4-nitrophenyl sulfamate

4-nitro-phenol
100-02-7,78813-13-5,89830-32-0

4-nitro-phenol

aminosulfonic acid
5329-14-6

aminosulfonic acid

Conditions
Conditions Yield
With water; In acetonitrile; at 20 ℃; pH=11.7; pH-value; Temperature; Activation energy; Mechanism;
sulfuric acid
7664-93-9

sulfuric acid

urea
57-13-6

urea

ammonium bisulfate
7803-63-6

ammonium bisulfate

aminosulfonic acid
5329-14-6

aminosulfonic acid

disulfuric acid
7783-05-3

disulfuric acid

Conditions
Conditions Yield
In sulfuric acid; byproducts: CO2; heating with excess H2SO4 (100%/130-140°C); evolution of CO2;;

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