NITROUS ACID

NITROUS ACID 구조식 이미지
카스 번호:
7782-77-6
동의어(한글):
아질산
상품명:
NITROUS ACID
동의어(영문):
HNO2;HONO;nitrousaci;NITROUS ACID;kyselinadusite;Kyselina dusite;Nitrosyl hydroxide;Nitrous acid, trans
CBNumber:
CB4453949
분자식:
HNO2
포뮬러 무게:
47.01
MOL 파일:
7782-77-6.mol
MSDS 파일:
SDS

NITROUS ACID 속성

밀도
1.54±0.1 g/cm3(Predicted)
물리적 상태
용액에서만 안정함
산도 계수 (pKa)
pK (25°) 3.35
색상
stable only in solution
수소이온지수(pH)
3.28(1 mM solution);2.67(10 mM solution);2.13(100 mM solution)
EPA
Nitrous acid (7782-77-6)
안전
  • 위험 및 안전 성명
  • 위험 및 사전주의 사항 (GHS)
유해 물질 데이터 7782-77-6(Hazardous Substances Data)
기존화학 물질 KE-26035
그림문자(GHS): GHS hazard pictograms
신호 어: Danger
유해·위험 문구:
암호 유해·위험 문구 위험 등급 범주 신호 어 그림 문자 P- 코드
H314 피부에 심한 화상과 눈에 손상을 일으킴 피부부식성 또는 자극성물질 구분 1A, B, C 위험 GHS hazard pictograms P260,P264, P280, P301+P330+ P331,P303+P361+P353, P363, P304+P340,P310, P321, P305+ P351+P338, P405,P501
예방조치문구:
P260 분진·흄·가스·미스트·증기·...·스프레이를 흡입하지 마시오.
P264 취급 후에는 손을 철저히 씻으시오.
P264 취급 후에는 손을 철저히 씻으시오.
P280 보호장갑/보호의/보안경/안면보호구를 착용하시오.
P301+P330+P331 삼켰다면 입을 씻어내시오. 토하게 하려 하지 마시오.
P303+P361+P353 피부(또는 머리카락)에 묻으면 오염된 모든 의복은 벗거나 제거하시오 피부를 물로 씻으시오/샤워하시오.
P304+P340 흡입하면 신선한 공기가 있는 곳으로 옮기고 호흡하기 쉬운 자세로 안정을 취하시오.
P305+P351+P338 눈에 묻으면 몇 분간 물로 조심해서 씻으시오. 가능하면 콘택트렌즈를 제거하시오. 계속 씻으시오.
P310 즉시 의료기관(의사)의 진찰을 받으시오. 삼켰다면 즉시 의료기관(의사)의 도움을 받으시오.
P321 (…) 처치를 하시오.
P363 다시 사용전 오염된 의류는 세척하시오.
P405 밀봉하여 저장하시오.
P501 ...에 내용물 / 용기를 폐기 하시오.

NITROUS ACID C화학적 특성, 용도, 생산

개요

Nitrous acid (molecular formula?HNO2) is a weak and monobasic acid known only in solution and in the form of nitrite salts. Nitrous acid rapidly decomposes into nitrogen oxide, nitric oxide and water when in solution:
2HNO2 ? NO2 + NO+H2O
It can also decompose into nitric acid and nitrous oxide and water.
4HNO2 ? 2HNO3 +N2O +H2O
Nitric acid (HNO3), also known as “aqua fortis” and “spirit of nitre”, is a highly corrosive and toxic strong acid that can cause severe burns. It is colorless when pure and a slight yellow when “glacial”. Older samples tend to acquire a yellow cast due to the accumulation of various oxides of nitrogen. If the solution contains more than 86% nitric acid, it is referred to as “fuming nitric acid”.

화학적 성질

A weak acid occurring only in the form of a light-blue solution.

물리적 성질

Pale blue solution; stable only in solution; weak acid, Ka 4.5x10-4.

용도

Formation of diazotizing compounds by reaction with primary aromatic amines, source of nitric oxide.

용도

Nitrous acid is a nitrogen oxoacid. It is a conjugate acid of a nitrite. It (as sodium nitrite) is used as part of an intravenous mixture with sodium thiosulfate to treat cyanide poisoning. There is also research to investigate its applicability towards treatments for heart attacks, brain aneurysms, pulmonary hypertension in infants, and Pseudomonas aeruginosa infections.

제조 방법

Nitrous acid may be obtained in solution by adding a strong acid to nitrite; e.g., adding hydrochloric acid to sodium nitrite solution:
H+ + NO2 ˉ → HNO2.

정의

A weak acid known only in solution, obtained by acidifying a solution of a nitrite. It readily decomposes on warming or shaking to nitrogen monoxide and nitric acid. The use of nitrous acid is very important in the dyestuffs industry in the diazo reaction: nitrous acid is liberated by acidifying a solution of a nitrite (usually sodium nitrite) in the presence of the compound to be diazotized. Nitrous acid and the nitrites are normally reducing agents but in certain circumstances they can behave as oxidizing agents, e.g. with sulfur dioxide and hydrogen sulfide.

위험도

Rapidly forms nitric oxide and nitric acid in water; [Merck Index] A strong oxidizer; Causes burns; Highly toxic by ingestion and inhalation.

Safety Profile

Mutation data reported. Flammable by chemical reaction; a powerful oxidizer. Explodes on contact with phosphorus trichloride. Reacts violently with PH3 and Pcb. Reactions with l-amino- 5-nitrophenol, ammonium decahydroborate(2-), hydrazine (product is hydrogen azide) may give explosive products. Incompatible with anilines (e.g., 4- bromoahe , 2-chloroaniline, 3- chloroaniline, 2-nitroadine, 3-nitroaniline, 4-nitroaniline, aniline ), semicarbazone, silver nitrate. When heated to decomposition it emits hghly toxic fumes of NOx. See also NITRIC OXIDE.

NITROUS ACID 준비 용품 및 원자재

원자재

준비 용품


NITROUS ACID 공급 업체

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