티오황산 나트륨
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티오황산 나트륨 속성
- 녹는점
- 48°C
- 끓는 점
- 100°C
- 밀도
- 1.01 g/mL at 25 °C
- 벌크 밀도
- 1350kg/m3
- 저장 조건
- Store at +5°C to +30°C.
- 용해도
- 알코올과 혼합되지 않습니다.
- 물리적 상태
- 고체
- 물리적 상태
- 단단한 모양
- Specific Gravity
- 1.667
- 색상
- 하얀색
- 수소이온지수(pH)
- 6.0-8.5 (25℃, 50mg/mL in H2O)
- 수용성
- 물에 용해됩니다. 알코올에 불용성.
- 감도
- Hygroscopic
- Merck
- 14,8694
- 안정성
- 안정적인. 강산, 강산화제, 요오드, 수은과 호환되지 않습니다.
- InChIKey
- AKHNMLFCWUSKQB-UHFFFAOYSA-L
- LogP
- -0.428 (est)
- CAS 데이터베이스
- 7772-98-7(CAS DataBase Reference)
안전
- 위험 및 안전 성명
- 위험 및 사전주의 사항 (GHS)
위험품 표기 | Xi | ||
---|---|---|---|
위험 카페고리 넘버 | 36/37/38 | ||
안전지침서 | 24/25-23-36-26 | ||
WGK 독일 | 1 | ||
RTECS 번호 | XN6476000 | ||
F 고인화성물질 | 3 | ||
TSCA | Yes | ||
HS 번호 | 28323000 | ||
유해 물질 데이터 | 7772-98-7(Hazardous Substances Data) | ||
독성 | LD50 orally in Rabbit: > 5000 mg/kg | ||
기존화학 물질 | KE-31633 |
티오황산 나트륨 C화학적 특성, 용도, 생산
물성
화학식 Na2S2O3. 무색의 주상(柱狀) 결정으로, 녹는점 48.2℃, 비중 1.85이다. 보통은 5수화물로서 존재한다. 결정은 공기 중에서는 안정하지만, 찬공기 중에서는 약간 조해성을 보이며, 건조한 공기 중에서는 풍해성(風解性)을 보인다. 100g의 물에 0℃에서 74.7g, 60℃에서 301.8g이 용해한다.용도
각종 금속이온과 반응하여 티오 술파이트 착체를 생성하기 때문에 도금욕 중의 금속불순물 제거에 이용된다. 중금속이나 시안화수소의 해독제로써 사용된다. 수돗물의 염소제거제로 사용되기도 한다.화학적 성질
Sodium thiosulfate, Na2S203·5H20, also known as sodium hyposulfite, hypo,andsodium subsulfite, is a white crystalline solid that has a melting point of 48 °C(118 °F). Water soluble,it is used as a fixing agent for photographic films, plates, and papers. Sodium thiosulfate is used in medicine, as a germicide, in manufacturing leather, as a mordant in dyeing, and for extracting silver from ore.물리적 성질
Anhydrous thiosulfate is a white powder; soluble in water; insoluble in ethanol.Sodium pentahydrate is a colorless, odorless, crystalline solid; density 1.69 g/cm3; decomposes around 50°C; effloresces in dry air above 33°C; very soluble in water and oil of turpentine; insoluble in ethanol.
용도
Sodium thiosulfate is a common analytical reagent used in iodometric titration to analyze chlorine, bromine, and sulfide. Other uses are in bleaching paper pulp, bleaching straw, ivory, and bones, for removing chlorine from solutions, silver extraction from its ores, a mordant in dyeing and printing textiles, and as an antidote to cyanide poisoning.Another major application is in photography, where it is used as a fixer to dissolve unchanged silver salts from exposed negatives.
Sodium Thiosulfate is used primarily as a medicament against cyanide poisoning, able to convert cyanide into thiocyanate, a reaction which is catalyzed by the enzyme Rhodanese. Antioxidant.
정의
ChEBI: An inorganic sodium salt composed of sodium and thiosulfate ions in a 2:1 ratio.제조 방법
Sodium thiosulfate is a common reducing agent. It reduces iodine to iodide anion forming sodium tetrathionate. This reaction is utilized in the so-called iodometric titration: 2S2O32ˉ + I2 → S4O62ˉ + 2IˉSodium thiosulfate reacts with chlorine to form sodium bisulfate and hydrochloric acid. This reaction removes chlorine from aqueous solutions:Na2S2O3 + 4Cl2 + 5H2O → 2NaHSO4 + 8HCl
Sodium thiosulfate reacts with hydrochloric acid, decomposing to sulfur and sulfur dioxide: Na2S2O3 + 2HCl → 2NaCl + S + SO2 + H2O.
일반 설명
Sodium thiosulfate (Na2S2O3) can be obtained from Na2S2O3.10H2O by heating above 100 °C. It can be synthesized from sodium sulfate.위험도
Use in foods restricted to 0.1%.Safety Profile
Moderately toxic by subcutaneous route. Incompatible with metal nitrates, sodium nitrite. When heated to decomposition it emits very toxic fumes of Na2O and SOx. See also SODIUM THIOSULFATE and SODIUM THIOSULFATE, PENTAHYDRATE.Purification Methods
Crystallise it from EtOH/H2O solutions or from water (0.3mL/g) below 60o by cooling to 0o, and dry it at 35o over P2O5 under vacuum. [Foerster & Mommsen Chem Ber 57 258 1924.] This salt is used as a secondary standard in volumetric analysis [Kilpatrick J Am Chem Soc 45 2132 1923], and is used as “Hypo” in photography [Hargreaves & Dunningham J Soc Chem Ind 42 147T 1923.]티오황산 나트륨 준비 용품 및 원자재
원자재
유황
황화나트륨
아황산나트륨
이산화 황
Sulphur Black 1
타르타르산 칼륨 나트륨
오산화 바나듐
염산
유황
수산화나트륨
티오황산 나트륨 펜타수화물
황화 바륨
활성화 챠콜
황산
탄산나트륨(경회)
준비 용품
4-[4-(브로모메틸)페닐]-1,2,3-티아디아졸
3-FLUORO-2-IODOPYRIDINE-4-CARBOXYLIC ACID
4-Fluorothiophenol
S-METHYL-S-(4-METHOXYPHENYL) SULFOXIMINE
요오드시클로헥산
S-METHYL-S-(5-METHYLFURAN-2-YL) SULFOXIMINE
S-METHYL-S-(4-HYDROXYPHENYL) SULFOXIMINE
2,5-Dibromo-3-nitropyridine
Insecticide double agent
1-Adamantanol
4-(CHLOROSULFONYL)-7-FLUORO-2,1,3-BENZOXADIAZOLE
S-METHYL-S-(2-THIAZYL) SULFOXIMINE
S-METHYL-S-(2-FLUOROYPHENYL) SULFOXIMINE
S-메틸-S-(4-클로로페닐)설폭시민
1-(3-AMINO-2-CHLORO-PYRIDIN-4-YL)-ETHANONE
4-(N,N-디메틸아미노술포닐)-7-FLUORO-2,1,3-BENZOXADIAZOLE
4-Chlorobenzylsulfonyl chloride
1-TERT-BUTYL-3-(TRIFLUOROMETHYL)-1H-PYRAZOLE-4-CARBOXYLIC ACID
4-Bromo-2-fluorobenzonitrile
2-Bromo-4-pyridinecarboxaldehyde
카탑
3,5-DIBROMO-2-HYDROXY-4-METHOXYBENZALDEHYDE
S-METHYL-S-(3-ACETAMIDOPHENYL) SULFOXIMINE
DIMETHYL BROMOMALONATE
4-플루오로-2,1,3-벤조사디아졸
3-Bromo-1-benzothiophene
브로모(1,3-)-2-프로판올
3-NITROPHENYLMETHANESULFONYL CHLORIDE
S-METHYL-S-(4-METHYLPHENYL) SULFOXIMINE
S-ETHYL-S-PHENYL SULFOXIMINE
3-CHLORO-4-IODONITROBENZENE
1-요오도나프탈렌
4-(HYDROXYMETHYL)PICOLINITRILE
알리신
4-브로모-1-메틸-3-(트리플루오로메틸)-1H-피라졸
1-TERT-BUTYL-4-BROMO-3-(TRIFLUOROMETHYL)-1H-PYRAZOLE
브로모포름
3-Iodopyridine
1-(3-AMINO-PYRIDIN-4-YL)-ETHANONE
S-METHYL-S-(4-FLUOROPHENYL) SULFOXIMINE
티오황산 나트륨 공급 업체
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