인산 나트륨, 이염기

인산 나트륨, 이염기 속성

인산 나트륨, 이염기 MSDS

Disodium hydrogenorthophosphate

인산 나트륨, 이염기 C화학적 특성, 용도, 생산

물성

결정물은 무∼백색의 결정 또는 백색의 결정성분말이고, 무수물은 백색의 분말 또는 입상이다. 건조한 다음 정량할 때, 제일인산나트륨(NaH2PO4 ＝ 119.98) 97.0% 이상을 함유한다. 흡습성이 강하고 공기 중에서는 7분자까지 결정수를 갖는다. 물에는 쉽게 용해되고 수용액은 알칼리성(1→10)으로 pH 9.0∼9.4이다. 알코올에는 용해되기 어려우나 물 100㎖에 2.5g(0℃), 9.3g(20℃), 82.5g(50℃)의 용해도를 나타낸다. 결정형은 공기 중에서 서서히 용해하여 5분자의 결정수를 잃지만 무수물은 공기 중에 방치하면 7분자 상당량의 결정수를 서서히 흡습한다. 35℃로 가온하면 스스로 결정수를 잃고 녹는다

용도

식품첨가물용 용도 및 사용량(g/kg, 평균 최댓값)은 산도조절제로 사용되며 빵 및 떡류 (0.131), 스낵과자류 (35.0), 어육가공품 (4.5), 어육햄 (0.97), 모조치즈 (7.5).
공업용 용도로는 청관제, 탄철제, 피혁탄닝, 목제의 방부제, 범랑제조, 염색 매연제, 안료(침전제) 등에 사용된다.

개요

Sodium phosphate dibasic is highly hygroscopic and water soluble. Useful in conjunction with Sodium Phosphate, Monobasic in the preparation of biological buffers. It is commonly used in biological assay buffers. Sodium is required for nerve and muscle functioning. Sodium Phosphate Dibasic can be used as a dietary supplement and as a nutrient. Sodium hydrogen phosphate is used in food and water treatment in conjunction with trisodium phosphate.In foods, it is used to adjust pH. In water treatment, It retards calcium scale formation. It is also found in some detergents and cleaning agents. This product is known to be Used in many applications including the purification of antibodies. It is used as a saline laxative to treat constipation or to clean the bowel before a colonoscopy.

화학적 성질

The anhydrous compound is white crystalline powder; hygroscopic; density 1.70 g/cm3; converts to sodium pyrophosphate at 240°C; soluble in water; 874 SODIUM PHOSPHATE, DIBASIC insoluble in alcohol. The dihydrate is a crystalline powder or granular solid; density 2.066 g/cm3 at 15°C; loses water of crystallization at 92.5°C. The heptahydrate is a powdered or granular crystalline solid; density 1.679 g/cm3; loses five molecules of water at 48°C. The dodecahydrate is made up of translucent crystals or granules; density 1.524 g/cm3; readily loses five water molecules on exposure to air at ambient temperature; melts at 35°C when the salt contains all water of crystallization; loses all water at 100°C. All the hydrates are soluble in water and insoluble in alcohol.

물리적 성질

The anhydrous compound is white crystalline powder; hygroscopic; density 1.70 g/cm³; converts to sodium pyrophosphate at 240°C; soluble in water;insoluble in alcohol.
The dihydrate is a crystalline powder or granular solid; density 2.066 g/cm³ at 15°C; loses water of crystallization at 92.5°C.
The heptahydrate is a powdered or granular crystalline solid; density 1.679 g/cm³; loses five molecules of water at 48°C.
The dodecahydrate is made up of translucent crystals or granules; density 1.524 g/cm³; readily loses five water molecules on exposure to air at ambient temperature; melts at 35°C when the salt contains all water of crystallization; loses all water at 100°C.
All the hydrates are soluble in water and insoluble in alcohol.

출처

Disodium phosphate is anhydrous or contains two molecules of water of hydration

용도

Sodium Phosphate, Dibasic is used as a laboratory reagent and a buffer in chemical analysis. Other uses are in manufacturing ceramics, detergents, and enamels; as a mordant in dyeing; for fireproofing paper and wood; for weighting and printing silk; in the treatment of boiler water; as a sequestrant in food; as a dietary supplement; in soldering enamels; and in fertilizers. It is used therapeutically as a cathartic.

제조 방법

Dibasic sodium phosphate is prepared by treating phosphoric acid with a slight excess of sodium carbonate. The solution is boiled to expel carbon dioxide. Upon cooling dodecahydrate crystallizes out. Heating dodecahydrate at 100°C forms the anhydrous salt.
H3PO4 + Na2CO3 → Na2HPO4 + CO2 + H2O
Dibasic sodium phosphate also is prepared by reacting dibasic calcium phosphate with sodium carbonate. The product calcium carbonate precipitates leaving dibasic sodium salt in the solution. The solution on cooling yields crystals of hydrated product.
CaHPO4 + Na2CO3 → CaCO3 + Na2HPO4

일반 설명

Sodium phosphate dibasic in combination with sodium phosphate monobasic is used in the preparation of oral sodium phosphate solution (OSPS), which is a purgative used for bowel cleansing before colonoscopy.

Safety Profile

Poison by intravenous route. Moderately toxic by intraperitoneal, subcutaneous, and intramuscular routes. Mildly toxic by ingestion. A skin and eye irritant. When heated to decomposition it emits toxic fumes of POx and Na2O. See also PHOSPHATES.

Purification Methods

Crystallise the salt twice from warm water, by cooling. Dry in air, then in an oven overnight at 130o. It should be dried before use as it is slightly hygroscopic. It forms di-, hepta-and deca-hydrates.

인산 나트륨, 이염기 준비 용품 및 원자재

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인산 나트륨, 이염기 공급 업체

공급자	전화	이메일	국가	제품 수	이점
Jiangsu Kolod Food Ingredients Co.,Ltd.	+86-518-85110578 +8618805133257	sales3257@jskolod.com	China	132	60
Chongqing Chuandong Chemical (Group) Co. Ltd.	+86-13637972665 +86-13637972665	wxc@cd1958.com	China	81	58
Hebei Mojin Biotechnology Co., Ltd	+8613288715578	sales@hbmojin.com	China	12456	58
Changzhou Rokechem Technology Co., Ltd.	18758118018	sales001@rokechem.com	China	255	58
Henan Fengda Chemical Co., Ltd	+86-371-86557731 +86-13613820652	info@fdachem.com	China	8095	58
Hebei Saisier Technology Co., LTD	+86-18400010335 +86-13102810335	admin@hbsaisier.cn	China	818	58
Hangzhou FandaChem Co.,Ltd.	008657128800458; +8615858145714	fandachem@gmail.com	China	9348	55
Hefei TNJ Chemical Industry Co.,Ltd.	+86-0551-65418679 +86-18949832763	info@tnjchem.com	China	2989	55
Shanghai Zheyan Biotech Co., Ltd.	18017610038	zheyansh@163.com	CHINA	3620	58
career henan chemical co	+86-0371-86658258	sales@coreychem.com	China	29914	58

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