Cov khoom
Sulfamic acid
Sulfamic acid Chemical Properties
| Melting point | 215-225 ° C (txog.) (lit.) |
| Boiling point | -520.47 ° C (kwv yees) |
| ceev | 2.151 g / cm3 ntawm 25 ° C |
| vapor siab | 0.8Pa ntawm 20 ℃ |
| Refractive Index | 1.553 ib |
| cia temp. | Khaws hauv qab +30 ° C. |
| solubility | dej: soluble 213g / L ntawm 20 ° C |
| pka ua | -8.53 ± 0.27 (Kev kwv yees) |
| daim ntawv | Crystalline hmoov los yog Crystalline hmoov |
| xim | Dawb |
| PH | 1.2 (10g/l, H2O) |
| Dej Solubility | 146.8 g / L (20 ºC) |
| Merck | 14, 8921 ib |
| Kev ruaj ntseg: | ruaj khov. |
| InChIKey | IIACRCGMVDHOTQ-UHFFFAOYSA-N |
| LogP | 0 ntawm 20 ℃ |
| CAS DataBase Reference | 5329-14-6 (CAS DataBase Reference) |
| NIST Chemistry Reference | Sulfamic acid (5329-14-6) |
| EPA Tshuaj Registry System | Sulfamic acid (5329-14-6) |
Cov ntaub ntawv kev nyab xeeb
| Hazard Codes | Xi |
| Risk Statements | 36/38-52/53 ib |
| Cov lus hais txog kev nyab xeeb | 26-28-61-28 A |
| RIDADR | UN 2967 8/PG 3 |
| WGK Germany | 1 |
| RTECS | wb 595000 |
| TSCA | Yog lawm |
| HazardClass | 8 |
| PackingGroup | III |
| HS Code | 2811980 ib |
| Cov Ntaub Ntawv Muaj Xwm Ceev | 5329-14-6 (Cov Ntaub Ntawv Tshuaj Tiv Thaiv) |
| Toxicity | MLD qhov ncauj hauv nas: 1.6 g / kg (Ambrose) |
Sulfamic acid Siv thiab Synthesis
| Chemical Properties | Sulfamic acid yog dawb orthorhombic flaky siv lead ua, tsw tsw, tsis-volatile thiab tsis-hygroscopic.Soluble nyob rau hauv dej thiab kua ammonia, me ntsis soluble nyob rau hauv methanol, insoluble nyob rau hauv ethanol thiab ether, kuj insoluble nyob rau hauv carbon disulfide thiab kua sulfur dioxide.Nws cov tshuaj aqueous muaj tib lub zog acid zog xws li hydrochloric acid thiab sulfuric acid, tab sis nws cov corrosiveness rau hlau yog qis dua li ntawm hydrochloric acid.Cov tshuaj toxicity tsawg heev, tab sis nws yuav tsum tsis txhob nyob rau hauv kev sib cuag nrog daim tawv nqaij ntev, thiab nws yuav tsum tsis txhob nkag mus rau hauv lub qhov muag. |
| Siv | Sulfamic acid yog dav siv nyob rau hauv electroplating, hard-dej scale removers, acidic tu tus neeg saib xyuas, chlorine stabilizers, sulfonating agents, denitrification agents, tshuaj tua kab mob, nplaim retardants, herbicides, dag sweeteners thiab catalysts. Sulfamic acid yog qhov ua ntej rau cov khoom qab zib.Cov tshuaj tiv thaiv nrog cyclohexylamine ua raws li kev sib ntxiv ntawm NaOH muab C6H11NHSO3Na, sodium cyclamate. Sulfamic acid yog dej-soluble, muaj zog acid.Ib qho nruab nrab ntawm sulfuric acid thiab sulfamide, nws tuaj yeem siv los ua cov khoom ua ntej rau cov khoom qab zib-tasting, cov tshuaj kho mob, tshuaj ntxuav cov kua qaub, thiab cov catalyst rau esterification. |
| Daim ntawv thov | Sulfamic acid, monoamide ntawm sulfuric acid, yog ib qho muaj zog inorganic acid.Nws yog feem ntau siv hauv tshuaj ntxuav cov txheej txheem xws li tshem tawm nitrites, carbonate- thiab phosphate-muaj deposits. Sulfamic acid tuaj yeem siv los ua catalyst hauv: Friedlander quinoline synthesis. Kua Beckmann rearrangement rau synthesis ntawm amides los ntawm ketoximes. Kev npaj ntawm α-aminophosphonates los ntawm peb cov tshuaj tiv thaiv ntawm aldehydes, amines, thiab diethyl phosphite. |
| Txhais | ChEBI: Sulfamic acid yog qhov yooj yim tshaj plaws ntawm cov sulfamic acids uas muaj ib leeg sulfur atom covalently khi los ntawm ib daim ntawv cog lus rau hydroxy thiab amino pawg thiab los ntawm ob daim ntawv cog lus rau ob lub atoms oxygen.Nws yog ib tug muaj zog acid, yooj yim tsim sulphamate ntsev, uas yog heev soluble nyob rau hauv dej thiab ib txwm muaj nyob rau hauv lub zwitterion H3N +.TSO 3-. |
| Cov tshuaj tiv thaiv | Sulfamic acid yog ib tug muaj zog acid uas reacts nrog ntau yam yooj yim compounds.Nws yog rhuab mus rau saum toj no lub melting point (209 ° C) nyob rau hauv ib txwm siab pib decompose, thiab tseem yuav tsum tau rhuab mus rau saum toj 260 ° C kom decompose rau hauv sulfur trioxide, sulfur dioxide, nitrogen, hydrogen thiab dej. (1) Sulfamic acid tuaj yeem cuam tshuam nrog cov hlau los ua pob tshab crystalline ntsev.Xws li: 2H2NSO3H+Zn → Zn(SO3NH2)2+H2. (2) tuaj yeem ua rau cov hlau oxides, carbonates thiab hydroxides: FeO + 2HSO3NH2 → Fe(SO3NH2) 2 + H2O2 CaCO3+2HSO3NH2 →Ca(SO3NH2)2+H2O+CO23 Ni(OH)2+2HSO3NH2 →Ni(SO3NH2)2+H2O. (3) tuaj yeem cuam tshuam nrog nitrate lossis nitrite: HNO3 + HSO3NH2 → H2SO4 + N2O + H2O2 HNO2 + HSO3NH2 → H2SO4 + N2 + H2O. (4) tuaj yeem cuam tshuam nrog oxidants (xws li potassium chlorate, hypochlorous acid, thiab lwm yam): KClO3 + 2HSO3NH2 → 2H2SO4 + KCl + N2 + H2O2 2HOCl+HSO3NH2 → HSO3NCl2+2H2O |
| Kev piav qhia dav dav | Sulfamic acid zoo nkaus li dawb crystalline khoom.Qhov ceev 2.1 g / cm3.Melting point 205 ° C.Hluav taws kub.Irritates ntawm daim tawv nqaij, qhov muag, thiab mucous daim nyias nyias.Tsawg toxicity.Siv los ua dyes thiab lwm yam tshuaj.Nws yog siv los ua cov khoom siv raw rau kev npaj cov khoom qab zib xws li sodium cyclohexylsulfamate. |
| Cua & Dej Reactions | Soluble hauv dej [Hawley]. |
| Reactivity Profile | Sulfamic acid reacts exothermically nrog bases.Aqueous daws yog acidic thiab corrosive. |
| Hazard | Toxic los ntawm kev noj. |
| Health Hazard | TOXIC;nqus tau, noj los yog tawv nqaij nrog cov khoom yuav ua rau mob hnyav lossis tuag taus.Kev sib cuag nrog cov khoom molten yuav ua rau mob hnyav rau ntawm daim tawv nqaij thiab qhov muag.Tsis txhob sib cuag ntawm daim tawv nqaij.Cov teebmeem ntawm kev sib cuag lossis nqus pa tuaj yeem ncua sijhawm.Hluav taws yuav ua rau khaus, corrosive thiab/los yog cov pa phem.Cov dej ntws los ntawm kev tswj hluav taws los yog cov dej dilution tuaj yeem ua rau corrosive thiab/los yog tshuaj lom thiab ua rau muaj kuab paug. |
| Hluav Taws Xob | Tsis-combustible, tshuaj nws tus kheej tsis hlawv tab sis yuav decompose raws li cua sov los tsim corrosive thiab/los yog tshuaj lom pa taws.Ib txhia yog oxidizers thiab tej zaum yuav ignite combustibles (ntoo, ntawv, roj, khaub ncaws, thiab lwm yam).Kev sib cuag nrog cov hlau tuaj yeem hloov pauv cov pa hluav taws xob hydrogen.Cov thawv ntim khoom tuaj yeem tawg thaum cua sov. |
| Flammability thiab Explosibility | Nonflammable |
| Kev ruaj ntseg Profile | Tshuaj lom los ntawm txoj kev intraperitoneal.Mob hnyav los ntawm kev noj tshuaj.Tib neeg daim tawv nqaij irritant.Ib qho corrosive irritant rau ntawm daim tawv nqaij, qhov muag, thiab mucous daim nyias nyias.Ib yam khoom uas tsiv mus rau zaub mov los ntawm cov khoom ntim khoom.Kev ua phem lossis tawg nrog cov tshuaj chlorine, hlau nitrates + tshav kub, hlau nitrites + tshav kub, fuming HNO3.Thaum rhuab mus rau decomposition nws tawm cov pa phem heev ntawm SOx thiab NOx.Saib kuj SULFONATES. |
| Ntxim yuav nphav raug | Sulfamic acid yog siv rau hauv cov hlau thiab ceramic tu, bleaching ntawv pulp;thiab textiles hlau;nyob rau hauv acid tu;raws li ib tug stabilizing neeg sawv cev rau chlorine thiab hypochlorite nyob rau hauv lub pas dej ua ke;cua txias yees;thiab ntawv mills. |
| Kev xa khoom | UN2967 Sulfamic acid, Hazard chav kawm: 8;Cov ntawv lo: 8-Corrosive khoom. |
| Txoj kev Purification | Crystallize NH2SO3H los ntawm dej ntawm 70o (300mL ib 25g), tom qab lim, los ntawm kev txias me ntsis thiab muab pov tseg thawj pawg ntawm cov muaju (li 2.5g) ua ntej sawv hauv cov dej khov ntsev sib tov rau 20 feeb.Cov muaju yog lim tawm los ntawm kev nqus, ntxuav nrog me me ntawm cov dej khov dej txias, tom qab ntawd ob zaug nrog EtOH txias thiab thaum kawg nrog Et2O.Qhuav nws nyob rau hauv huab cua rau 1 teev, ces muab cia rau hauv ib tug desiccator tshaj Mg(ClO4)2 [Butler li al.Ind Eng Chem (Anal Ed) 10 690 1938].Rau kev npaj cov khoom siv thawj zaug saib Pure Appl Chem 25 459 1969. |
| Kev tsis sib haum xeeb | Cov tshuaj aqueous yog cov kua qaub muaj zog.Reacts nruj nrog cov acids muaj zog (tshwj xeeb tshaj yog fuming nitric acid), bases, chlorine.Reacts maj mam nrog dej, tsim ammonium bisulfate.Tsis sib haum nrog ammonia, amines, isocyanates, alkylene oxides;epichlorohydrin, oxidizers. |
Sau koj cov lus ntawm no thiab xa tuaj rau peb
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