|
Name
|
|
EINECS
|
226-218-8
|
|
CAS No.
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5329-14-6
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Density
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1.913 g/cm3
|
|
PSA
|
88.77000
|
LogP
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0.52900
|
|
Solubility
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146.8 g/L (20 °C) in water
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Melting Point
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215-225 °C (dec.)(lit.)
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Formula
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H3NO3S
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Boiling Point
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247oC
|
|
Molecular Weight
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97.0947
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Flash Point
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205oC
|
|
Transport Information
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UN 2967
|
Appearance
|
white crystalline solid
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|
Safety
|
26-28-61-28A
|
Risk Codes
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36/38-52/53
|
|
Molecular Structure
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|
Hazard Symbols
|
 Xi
|
|
Synonyms
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Stannous sulfamate;Scale Cleen;Amido Sulfonic Acid;Amidoschwefelsaeure;Aminosulfonic acid;Sulfamidsaeure;Amidosulfonic acid;Sulfamidic acid;Imidosulfonic acid;Aminosulfonic Acid (Sulfamic acid);
|
Article Data |
143
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Sulfamic acid Synthetic route
Conditions
| Conditions | Yield |
|---|
| In sulfuric acid byproducts: CO2; urea dild. in 100% H2SO4 (stirring/cooling); addn. of small portions of fuming H2SO4 (temp. shouldn't exceed 45°C/stirring/cooling); heating carefully to 80°C; evolution of CO2; addn. of next portion fuming H2SO4 and repeating;; left for some time; filtration, washing (concd. H2SO4); drying on clay; left overnight in air; recrystn. from water;; | 94% |
| In sulfuric acid heating with excess fuming H2SO4 (80-90°C, depending on SO3-content); vigorous reaction, evolution of heat;; | |
ammonium sulfamate
A
ammonium sulfate
B
triammonium hydrogen disulfate
Conditions| Conditions | Yield |
|---|
| With air In melt two salts was reacted in melt in air; | A n/a
B n/a
C 92% |
Conditions| Conditions | Yield |
|---|
| In water aq. acetoxim soln., containing liquid SO2, (25°C) left for 5 h in autoclave;; | 90% |
| In water aq. acetoxim soln. cooled to -80°C; excess of SO2 condensed; sealing of tube; warming up to 0°C (pressure increases); left for 5.5 h at that temp.;; opened flask releases excess of SO2; filtration; dried by washing (alc., ether);; | 77% |
| In ethanol; water acetoxim dild. in water/ethanol is satd. with SO2 gas (0°C); leftfor three days (0°C); (pptd. solid HSO3NH2 will be removed);; filtration, addn. of SO2; washing (alc., ether); dried in air;; | 76% |
| In water aq. medium; dependence of pressure (1.14-3.52 kg/cm*cm more than atm.) and temp. (5-30°C); formation of liquid SO2 should be avoided; pptn.;; | |
| In water aq. medium; dependence of pressure (1.14-3.52 kg/cm*cm more than atm.) and temp. (5-30°C); formation of liquid SO2 should be avoided; pptn.;; | |
Conditions| Conditions | Yield |
|---|
| In water byproducts: pyridine; diln. of C5H5NSO3 in ammonia water (10% NH3) under sepn. of pyridine;; extraction of pyridine (ether); evapn. (water bath); addn. of concd. H2SO4 (cooling); filtration; drying on clay; recrystn from water;; | 80% |
Conditions| Conditions | Yield |
|---|
| In water byproducts: trimethylamine; diln. in ammonia water by short heating under sepn. of (CH3)N;; evapn.; removal of exceeding NH3 and (CH3)3N; addn. of concd. H2SO4; sepn. of HSO3NH2;; | 80% |
Conditions| Conditions | Yield |
|---|
| With sodium carbonate In water byproducts: sodium sulfate; aq. soln. of NaNO2/Na2CO3; introduction of SO2 (until acidic/litmus); addn. of a drop concd. H2SO4; formation of N(SO3)(3-); hydrolysis; short heating or left for several hours (stream of air); neutralization (Na2CO3); evapn.; left (12h/0°C);; filtration from sodium sulfate; addn. of concd. H2SO4; immediate pptn. of most HSO3NH2 (left for another day/cooling); dried on clay; washed (ice cold water); recrystn. (hot water);; | 75% |
| With Na2CO3 In water byproducts: sodium sulfate; aq. soln. of NaNO2/Na2CO3; introduction of SO2 (until acidic/litmus); addn. of a drop concd. H2SO4; formation of N(SO3)(3-); hydrolysis; short heating or left for several hours (stream of air); neutralization (Na2CO3); evapn.; left (12h/0°C);; filtration from sodium sulfate; addn. of concd. H2SO4; immediate pptn. of most HSO3NH2 (left for another day/cooling); dried on clay; washed (ice cold water); recrystn. (hot water);; | 75% |
Conditions| Conditions | Yield |
|---|
| In neat (no solvent) byproducts: CO2; vigorous reaction (careful heating/cooling/stirring); temp. dependence on mechanism discussed;; | 73.4% |
| In neat (no solvent) byproducts: CO2; vigorous reaction (careful heating/cooling/stirring); temp. dependence on mechanism discussed;; | 73.4% |
| In not given equimolar amounts;; | |
hydroxyammonium sulfate
Conditions| Conditions | Yield |
|---|
| In water aq. hydroxylammonium sulfate soln. cooled to -30°C; excess of SO2 condensed into vessel and left for 24 h in autoclave (at common temps.);; removal of SO2 (passing air through soln.); crystallization, filtration;washing (alc., ether); drying (air); further pptn. of HSO3NH2 by addn. of concd. H2SO4 to mother lye (at 0°C);; | 72% |
| In water aq. medium; dependence of pressure (1.14-3.52 kg/cm*cm more than atm.) and temp. (5-30°C); formation of liquid SO2 should be avoided; pptn.;; | |
| In water aq. medium; dependence of pressure (1.14-3.52 kg/cm*cm more than atm.) and temp. (5-30°C); formation of liquid SO2 should be avoided; pptn.;; | |
potassium pyrosulfate
Conditions| Conditions | Yield |
|---|
| In water K2S2O7 (contaminated with 40% KHSO4) dild. in ammonia water (25%/shakingfor 0.5 h/cooling with cold water); until evolution of heat stops; heating (3 min/water bath);; left cooling; filtration, washing (ammonia water); evapn.; addn. of concd. H2SO4; left for several hours (common temps.); filtration; drying on clay; recrystn. from water;; | 60% |
Conditions| Conditions | Yield |
|---|
| In water byproducts: dimethylaniline; diln. in ice cold ammonia water (10% NH3/) left warming up to common temps. under sepn. of (CH3)2NC6H5;; evapn. (removal of exceeding NH3 and (CH3)2NC6H5/water bath); addn. of concd. H2SO4; sepn. of HSO3NH2;; | 58% |
Sulfamic acid Chemical Properties
Molecular structure of Sulfamic acid (CAS NO.5329-14-6) is:
Product Name: Sulfamic acid
CAS Registry Number: 5329-14-6
IUPAC Name: sulfamic acid
Molecular Weight: 97.09372 [g/mol]
Molecular Formula: H3NO3S
XLogP3-AA: -1.6
H-Bond Donor: 2
H-Bond Acceptor: 4
EINECS: 226-218-8
Melting Point: 215-225 °C (dec.)(lit.)
Surface Tension: 101.5 dyne/cm
Density: 1.913 g/cm3
Water Solubility: 146.8 g/L (20 °C)
Stability: Stable.
Product Categories: Intermediates of Dyes and Pigments;INORGANIC & ORGANIC CHEMICALS;Intermediates;Inorganics
Sulfamic acid Uses
Sulfamic acid (CAS NO.5329-14-6) is uaually used as herbicides, fire agents, paper and textile softeners,and metal cleaning agent. It can be used as standard in alkalimetry, in acid cleaning, in nitrite removal, in chlorine stabilization for use in swimming pools, cooling towers, paper mills.
Sulfamic acid Toxicity Data With Reference
| Organism | Test Type | Route | Reported Dose (Normalized Dose) | Effect | Source |
| guinea pig | LD50 | oral | 1050mg/kg (1050mg/kg) | BEHAVIORAL: ALTERED SLEEP TIME (INCLUDING CHANGE IN RIGHTING REFLEX)
BEHAVIORAL: EXCITEMENT
BEHAVIORAL: REGIDITY | Gigiena i Sanitariya. For English translation, see HYSAAV. Vol. 52(10), Pg. 88, 1987. |
| mouse | LD50 | oral | 1312mg/kg (1312mg/kg) | BEHAVIORAL: ALTERED SLEEP TIME (INCLUDING CHANGE IN RIGHTING REFLEX)
BEHAVIORAL: EXCITEMENT
BEHAVIORAL: REGIDITY | Gigiena i Sanitariya. For English translation, see HYSAAV. Vol. 52(10), Pg. 88, 1987. |
| rat | LD50 | oral | 3160mg/kg (3160mg/kg) | | "Sbornik Vysledku Toxixologickeho Vysetreni Latek A Pripravku," Marhold, J.V., Institut Pro Vychovu Vedoucicn Pracovniku Chemickeho Prumyclu Praha, Czechoslovakia, 1972Vol. -, Pg. 18, 1972. |
| rat | LDLo | intraperitoneal | 100mg/kg (100mg/kg) | | Journal of Industrial Hygiene and Toxicology. Vol. 25, Pg. 26, 1943. |
Sulfamic acid Safety Profile
Hazard Codes: 
Xi
Risk Statements: 36/38-52/53
R36/38:Irritating to eyes and skin.
R52/53:Harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment.
Safety Statements: 26-28-61-28A
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S28:After contact with skin, wash immediately with plenty of soap-suds.
S61:Avoid release to the environment. Refer to special instructions / safety data sheets.
S28:After contact with skin, wash immediately with plenty of soap-suds.
RIDADR: UN 2967 8/PG 3
WGK Germany: 1
RTECS: WO5950000
HazardClass: 8
PackingGroup: III
HS Code: 28111980
Sulfamic acid Specification
Sulfamic acid , its cas register number is 5329-14-6. It also can be called Amidosulfonic acid ; Amidosulfuric acid ; Aminosulfonic acid .It is a white crystalline solid.It reacts exothermically with bases. Aqueous solutions are acidic and corrosive.
