아황산나트륨

아황산나트륨 속성

아황산나트륨 MSDS

Sodium sulfite

아황산나트륨 C화학적 특성, 용도, 생산

물성

무색 결정으로, 비중 1.59이다. 37 ℃ 이상에서는 무수염이 된다. 무수염은 무색의 결정 또는 분말 이며, 가열에 의해 분해된다. 공기 중에서는 서서히 산화되나, 7수화염보다는 안정하다.

존재

탄산나트륨 수용 액에 이산화황(아황산가스)을 통과시켜 아황산수소나트륨용액을 만들고, 이것을 당량(當量)의 탄산 나트륨으로 중화시켜 37 ℃ 이하에서 증발 ·농축하면 얻는다. 또, 수산화나트륨의 진한 용액을 냉 각시키면서, 이것에 이산화황을 통과시켜 중화해도 생긴다.

용도

비스코오스 ·염료의 제조, 티오황산나트륨의 제조원료, 환원제 ·사진현상액 ·표백제 ·방부제 에 사용되며, 고무 공업 ·플라스틱 공업 등에서도 사용된다.

순도시험

  결정물은 순도시험에 있어 규정되어 있는 검체량의 그 2배량을 취하여 시험한다.

  (1) 용상 : 이 품목 0.5g을 물 10mL에 녹일 때, 그 액은 무색으로서 탁도는 거의 징명하여야 한다.

  (2) 비소 : 이 품목을 비소시험법에 따라 시험할 때, 그 양은 4.0ppm 이하이어야 한다.

  (3) 납 : 「메타인산나트륨」의 순도시험 (2)에 따라 시험한다(2.0ppm 이하).

  (4) 셀레늄 : 이 품목 2.0g을 정밀히 달아 50mL 비이커에 넣고 물 10mL 및 염산 5mL를 가하고 끓여 이산화황을 제거한 액을 시험용액으로 한다. 따로, 이 품목 1.0g 및 셀레늄표준용액 0.5mL를 비이커에 넣고 시험용액과 동일한 방법으로 처리한 액을 대조액으로 한다. 시험용액 및 대조액 각각에 히드라진황산염 2g을 넣고 가온하여 녹인 다음 5분간 방치한 후, 네슬러관에 옮기고 물을 가하여 50mL로 한 다음 색을 비교할 때, 시험용액의 홍색은 대조액의 색보다 진하여서는 아니 된다(5ppm 이하).

  (5) 철 : 이 품목 5.0g을 취하여 원자흡광광도법 또는 유도결합플라즈마발광광도법에 따라 시험할 때, 그 양은 10ppm 이하이어야 한다.

  (6) 수은 : 이 품목을 수은시험법에 따라 시험할 때, 그 양은 1.0ppm 이하이어야 한다.

  (7) 치오황산염 : 이 품목의 10% 수용액에 황산 또는 염산을 가하여 산성으로 할 때, 그 액은 투명하여야 한다(0.1% 이하).

확인시험

  이 품목은 확인시험법 중 아황산염의 반응 및 나트륨염의 (가) 및 (나)의 반응을 나타낸다.

정량법

  이 품목을 무수물로 약 0.25g에 대응하는 양을 정밀히 달아 미리 0.1N 요오드용액 50mL를 넣은 공전플라스크에 넣어 녹이고 마개를 막아 5분간 방치한 다음 염산(2→3) 2mL를 넣어 과잉의 요오드를 0.1N 치오황산나트륨용액으로 적정한다(지시약 : 전분시액).

0.1N 요오드용액 1mL ＝ 6.302mg Na₂SO₃

   V : 0.1N 치오황산나트륨용액의 소비량(mL)

정의

  이 품목에는 결정물(7수염) 및 무수물이 있고, 각각을 아황산나트륨(결정) 및 아황산나트륨(무수)라 칭한다.

화학적 성질

Sodium sulfite,Na2S03, is a white,water-soluble, crystalline solid with a sulfurous, salty taste. It decomposes when heated. Sodium sulfite is used as a source of sulfite,as a chemical intermediate and food preservative, in medicine and paper manufacturing, in photographic developing, and as a bleaching agent in the textile industry. Most boiler operators use sodium sulfite for chemicals cavenging of oxygen in the feedwater. Because it decomposes into acidic gases at the high temperatures that accompany high pressures, sodium sulfite should not be used for this purpose at pressures above 122atm (12.4MPa,or 1.8 ksi).

용도

sodium sulfite has anti-septic, preservative, and anti-oxidant properties. Sodium sulfite is also a topical anti-fungal.

생산 방법

Sodium bisulfite is prepared by reacting sulfur dioxide gas with sodium hydroxide solution. The solid material is obtained by evaporation of water. Further neutralization with sodium hydroxide while keeping the temperature above 33.6°C leads to crystallization of the anhydrous sodium sulfite (below this temperature the heptahydrate form is obtained).

정의

ChEBI: An inorganic sodium salt having sulfite as the counterion.

일반 설명

White odorless powder. Density 2.633 g / cm3. Moderately toxic. Sinks in water and dissolves slowly. Also transported as a heptahydrate Na2SO3.7H2O.

공기와 물의 반응

Soluble in water. Reacts with hot water, steam or acids to produce corrosive material.

반응 프로필

Sodium sulfite is a reducing agent, particularly under basic conditions. Reacts with oxidizing agents such as peroxides, epoxides, oxoacids. Emits toxic fumes of sodium oxide and oxides of sulfur if heated to decomposition [Lewis, 3rd ed., 1993, p. 1174].

위험도

Use prohibited in meats and other sources of Vitamin B 1

건강위험

When ingested, solutions cause gastric irritation by the liberation of sulfurous acid. Because of rapid oxidation to sulfate, sulfites are well tolerated until large doses are reached; then violent colic and diarrhea, circulatory disturbances, central nervous depression, and death can occur.

화재위험

Literature sources indicate that Sodium sulfite is noncombustible.

Pharmaceutical Applications

Sodium sulfite is used as an antioxidant in applications similar to those for sodium metabisulfite. It is also an effective antimicrobial preservative, particularly against fungi at low pH (0.1% w/v of sodium sulfite is used). Sodium sulfite is used in cosmetics, food products, and pharmaceutical applications such as parenteral formulations, inhalations, oral formulations, and topical preparations.

색상 색인 번호

Sodium sulfite is mainly used in photographic developers, for fixing prints, bleaching textile fibers, as a reducer in manufacturing dyes, as a remover of Cl in bleached textiles and paper, and as a preservative in the food industry for meat, egg yolks, and so on.

Safety Profile

Poison by intravenous and subcutaneous routes. Moderately toxic by ingestion and intraperitoneal routes. Human mutation data reported. When heated to decomposition it emits very toxic fumes of Na2O and SOx. A reducing agent. See also SULFITES.

Safety

Sodium sulfite is widely used in food and pharmaceutical applications as an antioxidant. It is generally regarded as relatively nontoxic and nonirritant when used as an excipient. However, contact dermatitis and hypersensitivity reactions have been reported. The acceptable daily intake for sodium sulfite has been set at up to 350 mg/kg body-weight daily.
LD50 (mouse, IP): 0.950 g/kg
LD50 (mouse, IV): 0.130 g/kg
LD50 (mouse, oral): 0.820 g/kg
LD50 (rabbit, IV): 0.065 g/kg
LD50 (rabbit, oral): 1.181 g/kg
LD50 (rat, IV): 0.115 g/kg

잠재적 노출

Sodium sulfite is used as a reducing agent; in boiler water treatment; food applications; in photographic developers and fixers; in bleaching of wool, paper, textiles, straw and silk; manufacture of dyes; dechlorination; preservation of meat, fruit and egg products; silvering of glass.

환경귀착

Because sodium sulfite is a solid powder that is generally sold as a ‘food grade’ substance, there is very little information available on the environmental fate of sodium sulfite. It has a molecular weight of 126.04 g mol^-1. At 20°C, the solubility in water is 250 000 mg l^-1, and as it is an inorganic salt the vapor is negligible (USEPA, 2011). The log octanol/water partition coefficient is estimated to be
7.78.
If released into water or soil, sodium sulfite would most likely be oxidized to sulfate, which would then be available for use by bacteria or plants as a nutrient.
The US Environmental Protection Agency (EPA) EPI Suite computer program (USEPA, 2011) estimates both a bioconcentration factor and a bioaccumulation factor of 0.89. These factors are less than one, meaning that bioconcentration and/or bioaccumulation of sodium sulfite would be virtually negligible and therefore would not cause any adverse effects to fish and wildlife.

저장

Sodium sulfite should be stored in a well-closed container in a cool, dry, place. In solution, sodium sulfite is slowly oxidized to sulfate by dissolved oxygen; strong acids lead to formation of sulfurous acid/ sulfur dioxide. On heating, sodium sulfite decomposes liberating sulfur oxides.

운송 방법

UN3260 Corrosive solid, acidic, inorganic, n.o.s., Hazard class: 8; Labels: 8-Corrosive material.

Purification Methods

Crystallise the sulfite from warm water (0.5mL/g) by cooling to 0o. Also purify it by repeated crystallisation from deoxygenated water inside a glove-box, and finally drying it under vacuum. [Rhee & Dasgupta J Phys Chem 89 1799 1985.]

비 호환성

Sodium sulfite is incompatible with acids, oxidizing agents, many proteins, and vitamin B1.

Regulatory Status

GRAS listed. Accepted for use as a food additive in Europe. Included in FDA Inactive Ingredients Database (epidural, IM, IV, and SC injections; inhalation solution; ophthalmic solutions; oral syrups and suspensions; otic solutions; topical creams and emulsions). Included in nonparenteral medicines licensed in the UK.

아황산나트륨 준비 용품 및 원자재

원자재

준비 용품

아황산나트륨 공급 업체

공급자	전화	이메일	국가	제품 수	이점
Hebei Mojin Biotechnology Co., Ltd	+8613288715578	sales@hbmojin.com	China	12456	58
Hebei Dangtong Import and export Co LTD	+8615632927689	admin@hbdangtong.com	China	991	58
Henan Bao Enluo International TradeCo.，LTD	+86-17331933971 +86-17331933971	deasea125996@gmail.com	China	2503	58
Anhui Ruihan Technology Co., Ltd	+8617756083858	daisy@anhuiruihan.com	China	994	58
Henan Tianfu Chemical Co.,Ltd.	+86-0371-55170693 +86-19937530512	info@tianfuchem.com	China	21691	55
Hangzhou FandaChem Co.,Ltd.	008657128800458; +8615858145714	fandachem@gmail.com	China	9348	55
ATK CHEMICAL COMPANY LIMITED	+undefined-21-51877795	ivan@atkchemical.com	China	32480	60
Hefei TNJ Chemical Industry Co.,Ltd.	+86-0551-65418679 +86-18949832763	info@tnjchem.com	China	2989	55
Shanxi Naipu Import and Export Co.,Ltd	+86-13734021967 +8613734021967	kaia@neputrading.com	China	1011	58
career henan chemical co	+86-0371-86658258	sales@coreychem.com	China	29914	58

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