옥살산나트륨
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옥살산나트륨 속성
- 녹는점
- 250-270 °C
- 밀도
- 2.34
- 저장 조건
- Store at +5°C to +30°C.
- 용해도
- H2O: 0.1 M at 20 °C, 투명, 무색
- 물리적 상태
- 가루
- 색상
- 하얀색
- 냄새
- 냄새 없는
- 수소이온지수(pH)
- 7-8.5 (25℃, 2.5% in H2O)
- 수용성
- 37 g/L (20 ºC)
- 감도
- Hygroscopic
- Merck
- 14,8650
- BRN
- 3631622
- 안정성
- 안정성 안정적; 흡습성. 강한 산화제와 호환되지 않습니다.
- CAS 데이터베이스
- 62-76-0(CAS DataBase Reference)
안전
- 위험 및 안전 성명
위험품 표기 | Xn | ||
---|---|---|---|
위험 카페고리 넘버 | 21/22-34 | ||
안전지침서 | 24/25-45-36/37/39-26-36 | ||
유엔번호(UN No.) | 3282 | ||
WGK 독일 | 1 | ||
RTECS 번호 | KI1750000 | ||
F 고인화성물질 | 21 | ||
TSCA | No | ||
위험 등급 | 6.1(b) | ||
포장분류 | III | ||
HS 번호 | 29171100 | ||
독성 | LD50 orally in Rabbit: 375 mg/kg | ||
기존화학 물질 | KE-31561 |
옥살산나트륨 C화학적 특성, 용도, 생산
개요
Sodium oxalate, or disodium oxalate, is the sodium salt of oxalic acid with the molecular formula Na2C2O4. It is usually a white, crystalline, odorless powder, that decomposes at 250–270 °C.Disodium oxalate can act as a reducing agent, and it may be used as a primary standard for standardizing potassium permanganate (KMnO4) solutions.
The mineral form of sodium oxalate is natroxalate. It is only very rarely found and restricted to extremely sodic conditions of ultraalkaline pegmatites.
화학적 성질
White, crystalline powder. Soluble in water; insolu- ble in alcohol.물리적 성질
White crystalline powder; density 2.34 g/cm3; decomposes around 250° C; sparingly soluble in water, 3.7 g/100 mL at room temperature; moderately soluble in boiling water, about 6.25 g/100 mL; the aqueous solution is practically neutral; insoluble in alcohol.용도
Sodium Oxalate is obtained in such high purity and is so stable that it is used as a titrimetric standard.제조 방법
Sodium oxalate can be prepared through the neutralization of oxalic acid with sodium hydroxide (NaOH) in a 1:2 acid-to-base molar ratio. Half-neutralization can be accomplished with NaOH in a 1:1 ratio which produces NaHC2O4, monobasic sodium oxalate or sodium hydrogenoxalate.정의
ChEBI: An organic sodium salt consisting of sodium and oxalate ions in a 2:1 ratio.화학 반응
Sodium oxalate is used to standardize potassium permanganate solutions. It is desirable that the temperature of the titration mixture is greater than 60 °C to ensure that all the permanganate added reacts quickly. The kinetics of the reaction is complex, and the manganate (II) ions formed catalyze the further reaction between permanganate and oxalic acid (formed in situ by the addition of excess sulfuric acid). The final equation is as follows:5Na2C2O4 + 2KMnO4 + 8H2SO4 → K2SO4 + 2MnSO4 + 10CO2 + 8H2O.
일반 설명
Odorless white solid. Sinks and mixes slowly with water.반응 프로필
Disodium oxalate gives basic aqueous solutions. Neutralizes acids in exothermic reactions. Can serve as a reducing agent in reactions that generate carbon dioxide.위험도
Toxic by ingestion.건강위험
Inhalation or ingestion causes pain in throat, esophagus, and stomach; mucous membranes turn white; other symptoms include vomiting, severe purging, weak pulse, cardiovascular collapse, neuromuscular symptoms, and kidney damage. Contact with eyes or skin causes irritation.Toxicology
Like several other oxalates, sodium oxalate is toxic to humans. It can cause burning pain in the mouth, throat and stomach, bloody vomiting, headache, muscle cramps, cramps and convulsions, drop in blood pressure, heart failure, shock, coma, and possible death. Mean lethal dose by ingestion of oxalates is 10-15 grams (per MSDS).Sodium oxalate, like citrates, can also be used to remove calcium ions (Ca2+) from blood plasma. It also prevents blood from clotting. Note that by removing calcium ions from the blood, sodium oxalate can impair brain function, and deposit calcium oxalate in the kidneys.
Purification Methods
It crystallises from hot water (16mL/g) by cooling to 0o. Before use as a volumetric standard, analytical grade quality sodium oxalate should be dried for 2hours at 120o and allowed to cool in a desiccator. [Beilstein 2 IV 1819.]옥살산나트륨 준비 용품 및 원자재
원자재
준비 용품
옥살산나트륨 공급 업체
글로벌( 436)공급 업체
공급자 | 전화 | 이메일 | 국가 | 제품 수 | 이점 |
---|---|---|---|---|---|
Hebei Mojin Biotechnology Co., Ltd | +8613288715578 |
sales@hbmojin.com | China | 12456 | 58 |
Hebei Yanxi Chemical Co., Ltd. | +8617531190177 |
peter@yan-xi.com | China | 5993 | 58 |
Henan Bao Enluo International TradeCo.,LTD | +86-17331933971 +86-17331933971 |
deasea125996@gmail.com | China | 2503 | 58 |
Jiangsu Kolod Food Ingredients Co.,Ltd. | +86-518-85110578 +8618805133257 |
sales3257@jskolod.com | China | 132 | 60 |
Henan Tianfu Chemical Co.,Ltd. | +86-0371-55170693 +86-19937530512 |
info@tianfuchem.com | China | 21691 | 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 |
Hubei Jusheng Technology Co.,Ltd. | 18871490254 |
linda@hubeijusheng.com | CHINA | 28180 | 58 |
Hebei Guanlang Biotechnology Co., Ltd. | +86-19930503282 |
alice@crovellbio.com | China | 8823 | 58 |
옥살산나트륨 관련 검색:
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