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옥살산

옥살산
옥살산 구조식 이미지
카스 번호:
6153-56-6
한글명:
옥살산
동의어(한글):
디카르복실산;옥사린산,디히드레이트;옥살산;옥사린산,디히드레이트(OXALICACID,DIHYDRATE);수산2수화물
상품명:
Oxalic acid dihydrate
동의어(영문):
Oxalate Acid;Has two acid;OxalicAcidGr;OXALIC ACID 2H2O;OXALIC ACID PURE;ETHANEDIOIC ACID;Ethanedionic acid;ic acid dihydrate;OxalicAcidPurified;Oxalsαure-dihydrat
CBNumber:
CB1303757
분자식:
C2H6O6
포뮬러 무게:
126.07
MOL 파일:
6153-56-6.mol

옥살산 속성

녹는점
104-106 °C(lit.)
끓는 점
108-109°C
밀도
1,65 g/cm3
증기 밀도
4.4 (vs air)
증기압
<0.01 mm Hg ( 20 °C)
인화점
157°C
저장 조건
Store at +5°C to +30°C.
용해도
H2O: soluble1M at 20°C, clear, colorless
물리적 상태
Powder/Solid
색상
Yellow to yellow-green
Specific Gravity
1.65
수소이온지수(pH)
~1.0 (25℃, 1M in H2O)
pH 범위
6 - 8 at 25 °C
수용성
138 g/L (20 ºC)
승화점
157 ºC
Merck
14,6911
BRN
3679436
노출 한도
TLV-TWA for anhydrous acid 1 mg/m3 (ACGIH, MSHA, and OSHA); TLV-STEL 2 mg/m3 (ACGIH).
안정성
Stable. Incompatible with bases, acid chlorides, steel, silver, silver compounds, moisture. Avoid contact with metals.
InChIKey
GEVPUGOOGXGPIO-UHFFFAOYSA-N
CAS 데이터베이스
6153-56-6(CAS DataBase Reference)
NIST
Oxalic acid dihydrate(6153-56-6)
EPA
Oxalic acid dihydrate (6153-56-6)
안전
  • 위험 및 안전 성명
  • 위험 및 사전주의 사항 (GHS)
위험품 표기 Xn,C
위험 카페고리 넘버 21/22-41
안전지침서 24/25-39-37-36-26
유엔번호(UN No.) UN 3261 8/PG 3
WGK 독일 1
RTECS 번호 RO2450000
TSCA Yes
위험 등급 8
포장분류 III
HS 번호 29171100
독성 LD50 orally in Rabbit: 375 mg/kg
그림문자(GHS):
신호 어: Danger
유해·위험 문구:
암호 유해·위험 문구 위험 등급 범주 신호 어 그림 문자 P- 코드
H302 삼키면 유해함 급성 독성 물질 - 경구 구분 4 경고 P264, P270, P301+P312, P330, P501
H312 피부와 접촉하면 유해함 급성 독성 물질 - 경피 구분 4 경고 P280,P302+P352, P312, P322, P363,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.
P321 (…) 처치를 하시오.
P305+P351+P338 눈에 묻으면 몇 분간 물로 조심해서 씻으시오. 가능하면 콘택트렌즈를 제거하시오. 계속 씻으시오.
NFPA 704
1
2 0

옥살산 MSDS


Ethanedionic acid

옥살산 C화학적 특성, 용도, 생산

화학적 성질

white crystals

용도

Oxalic acid dihydrate is a purifying agent in pharmaceutical industry, special in antibiotic medication, such as Oxytetracycline , Chloramphenicol , etc; * Precipitating agent in Rare-earth mineral processing; * Bleaching agent in the textile activities, wood pulp bleaching; * Rust-remover for Metal treatment; * Grinding agent, such as Marble polishing; * Waste water treatment, removing calcium from water.

용도

A diprotic reducing agent used as a buffer.

용도

Oxalic acid occurs in the cell sap of Oxalisand Rumex species of plants as the potassium and calcium salt. It is the metabolicproduct of many molds (Merck 1989). Thereare a large number of applications of thiscompound, including indigo dyeing; calicoprinting; removal of paint, rust, and inkstains; metal polishing; bleaching leather; inpesticide compositions and manufacture ofoxalates. It is also used as an analyticalreagent and as a reducing agent in organicsynthesis.
Addition of oxalic acid to chromic acid forthe anodizing of Al alloy has been reported tomodify the morphology and improve the corrosion performance of anodic films (Moutarlier et al. 2004). Also, it is a very effectiveadditive for the ozone treatment of cellulose.It prevents the degradation of cellulose fromozone bleaching.

반응 프로필

At high temperatures oxalic acid decomposes, producing toxic carbon monoxide, andformic acid. Mixing with warm sulfuric acidmay produce the same products: CO2, CO,and formic acid. It reacts with many silvercompounds, forming explosive silver oxalate(NFPA 1986). An explosion occurred whenwater was added to an oxalic acid/sodiumchlorite mixture in a stainless steel beaker.There was also evolution of highly toxicchlorine dioxide gas (MCA 1962). Oxalicacid reacts violently with strong oxidizingsubstances.

건강위험

Oxalic acid is a strong poison. The toxicsymptoms from ingestion include vomiting, diarrhea, and severe gastrointestinaldisorder, renal damage, shock, convulsions,and coma. Death may result from cardiovascular collapse. The toxicity arises asoxalic acid reacts with calcium in the tissuesto form calcium oxalate, thereby upsettingthe calcium/potassium ratio (ACGIH 1986).Deposition of oxalates in the kidney tubulesmay result in kidney damage (Hodgson et al.1988).
Oxalic acid may be absorbed into the bodythrough skin contact. It is corrosive to theskin and eyes, producing burns. Dilute solutions of 10% strength may be a mild irritantto human skin. However, the inhalation toxicity is low because of its low vapor pressure.Airborne dusts can produce eyeburn and irritation of the respiratory tract.
LD50 value, oral (rats): 375 mg/kg.

Purification Methods

Crystallise oxalic acid from distilled water. Dry it in a vacuum over H2SO4. The anhydrous acid can be obtained by drying at 100o overnight. [Beilstein 2 IV 1819.]

옥살산 준비 용품 및 원자재

원자재

준비 용품


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