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차아인산

차아인산
차아인산 구조식 이미지
카스 번호:
6303-21-5
한글명:
차아인산
동의어(한글):
차아인산;포스핀산;하이포아인산용액;차아린산;하이포아인산용액(HYPOPHOSPHOROUSACIDSOLUTION)
상품명:
Hypophosphorous acid
동의어(영문):
PHOSPHINIC ACID;hypophosphorous;Dihydroxyphosphine;HYPOPHOSPHORIC ACID;HYPOPHOSPHORUS ACID;phosphinic acid 50%;HYPOPHOSPOROUS ACID;Hypophoaphoeous acid;HYPOPHOSPHOROUS ACID;Diphosphoric(IV) acid
CBNumber:
CB6130318
분자식:
HO2P
포뮬러 무게:
63.980501
MOL 파일:
6303-21-5.mol

차아인산 속성

녹는점
-25 °C
끓는 점
108 °C (759.8513 mmHg)
밀도
1.206 g/mL at 20 °C(lit.)
증기압
<17 mmHg ( 20 °C)
산도 계수 (pKa)
pK1 1.1.
물리적 상태
hygroscopic crystals or colorless oily liquid
색상
Colorless
수용성
SOLUBLE
Merck
13,4894
안정성
Stable. Incompatible with strong bases. Reacts violently with oxidizing agents, strong bases, mercury (II) nitrate and mercury (II) oxide. Do not heat above 100 C.
CAS 데이터베이스
6303-21-5(CAS DataBase Reference)
NIST
Hypophosphorous acid(6303-21-5)
안전
  • 위험 및 안전 성명
  • 위험 및 사전주의 사항 (GHS)
위험품 표기 C
위험 카페고리 넘버 34
안전지침서 26-36/37/39-45
유엔번호(UN No.) UN 3264 8/PG 3
WGK 독일 1
RTECS 번호 SZ6400000
TSCA Yes
위험 등급 8
포장분류 II
HS 번호 28111990
그림문자(GHS):
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 P260,P264, P280, P301+P330+ P331,P303+P361+P353, P363, P304+P340,P310, P321, P305+ P351+P338, P405,P501
H318 눈에 심한 손상을 일으킴 심한 눈 손상 또는 자극성 물질 구분 1 위험 P280, P305+P351+P338, P310
예방조치문구:
P280 보호장갑/보호의/보안경/안면보호구를 착용하시오.
P310 즉시 의료기관(의사)의 진찰을 받으시오. 삼켰다면 즉시 의료기관(의사)의 도움을 받으시오.
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.
P305+P351+P338 눈에 묻으면 몇 분간 물로 조심해서 씻으시오. 가능하면 콘택트렌즈를 제거하시오. 계속 씻으시오.
P405 밀봉하여 저장하시오.

차아인산 MSDS


Phosphinic acid

차아인산 C화학적 특성, 용도, 생산

용도

환원제,의약품,금속표면 처리.

개요

Hypophosphorous acid is a powerful reducing agent with a molecular formula of H3PO2. Inorganic chemists refer to the free acid by this name although its IUPAC name is dihydridohydroxidooxidophosphorus, or the acceptable name of phosphinic acid. It is a colorless low-melting compound, which is soluble in water, dioxane, and alcohols. The formula for hypophosphorous acid is generally written H3PO2, but a more descriptive presentation is HOP(O)H2 which highlights its monoprotic character. Salts derived from this acid are called phosphinates (hypophosphites).

개요

This acid has the general formula ofH4P2O6 and differs from the other oxy-phosphorous acids. It has many peculiarities. It is formed along with phosphorous and phosphoric acids, when phosphorus is oxidized by moist air. If white phosphorus is exposed to air, and sodium acetate is addedto the liquidwhich forms, the somewhat insoluble sodium hypophosphate,Na2H2P2O6·6H2Oseparates. The sodium hypophosphate monohydrate, however, is very soluble and deliquescent at ~98.7 g/100 ml.

화학적 성질

colourless liquid

용도

Preparation of hypophosphites, electroplating baths.

정의

ChEBI: A phosphorus oxoacid that consists of a single pentavalent phosphorus covalently bound via single bonds to two hydrogens and a hydroxy group and via a double bond to an oxygen. The parent of the class of phosphinic acids.

정의

A white crystalline solid. It is a monobasic acid forming the anion H2PO2 – in water. The sodium salt, and hence the acid, can be prepared by heating yellow phosphorus with sodium hydroxide solution. The free acid and its salts are powerful reducing agents.

일반 설명

Colorless oily liquid or deliquescent crystals with a sour odor. Density 1.439 g / cm3. Melting point 26.5°C. Inhalation of vapors irritates or burns the respiratory tract. Liquid and vapors may irritate or burn eyes and skin.

공기와 물의 반응

Deliquescent. Water soluble.

반응 프로필

HYPOPHOSPHOROUS ACID decomposes when heated into phosphoric acid and spontaneously flammable phosphine. Is oxidized by sulfuric acid with release of sulfur dioxide and sulfur. Reacts explosively with mercury(II) oxide [Mellor, 1940, Vol. 4, 778]. Reacts violently with mercury(II) nitrate [Mellor, 1940, Vol. 4, 993]. Neutralizes bases in exothermic reactions.

위험도

Fire and explosion risk in contact with oxidizing agents.

건강위험

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.

화재위험

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.

Purification Methods

Phosphorous acid is a common contaminant of commercial 50% hypophosphorous acid. Jenkins and Jones [J Am Chem Soc 74 1353 1952] purified this material by evaporating about 600mL in a 1L flask at 40o, under reduced pressure (in N2), to a volume of about 300mL. After the solution was cooled, it was transferred to a wide-mouthed Erlenmeyer flask which was stoppered and left in a Dry-ice/acetone bath for several hours to freeze (if necessary, with scratching of the wall). When the flask was then left at ca 5o for 12hours, about 30-40% of it liquefied, and was again filtered. This process was repeated, then the solid was stored over Mg(ClO4)2 in a vacuum desiccator in the cold. Subsequent crystallisations from n-butanol by dissolving it at room temperature and then cooling in an ice-salt bath at -20o did not appear to purify it further. The free acid forms deliquescent crystals m 26.5o and is soluble in H2O and EtOH. The NaH2PO2 salt can be purified through an anion exchange resin [Klement Z Anorg Allgem Chem 260 267 1949.]

차아인산 준비 용품 및 원자재

원자재

준비 용품


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