스테아르산
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스테아르산 속성
- 녹는점
- 67-72 °C (lit.)
- 끓는 점
- 361 °C (lit.)
- 밀도
- 0.845 g/cm3
- 증기압
- 1 mm Hg ( 173.7 °C)
- FEMA
- 3035 | STEARIC ACID
- 굴절률
- 1.4299
- 인화점
- >230 °F
- 저장 조건
- Store below +30°C.
- 용해도
- 물에는 거의 녹지 않으며, 에탄올(96%)과 경유(bp: 50-70°C)에는 용해됩니다.
- 물리적 상태
- 가루
- 산도 계수 (pKa)
- pKa 5.75±0.00(H2O t = 35) (Uncertain)
- Specific Gravity
- 0.84 (80℃)
- 색상
- 하얀색
- 냄새
- 무취 순한 지방
- ?? ??
- 냄새 없는
- 수용성
- 23&C에서 0.1-1g/100mL
- JECFA Number
- 116
- Merck
- 14,8804
- BRN
- 608585
- Dielectric constant
- 2.3(22℃)
- 노출 한도
- ACGIH: TWA 10 mg/m3; TWA 3 mg/m3
- InChIKey
- QIQXTHQIDYTFRH-UHFFFAOYSA-N
- LogP
- 8.22
- CAS 데이터베이스
- 57-11-4(CAS DataBase Reference)
안전
- 위험 및 안전 성명
- 위험 및 사전주의 사항 (GHS)
위험품 표기 | Xi,F | ||
---|---|---|---|
위험 카페고리 넘버 | 38-36/37/38-11 | ||
안전지침서 | 37/39-26-16 | ||
WGK 독일 | 3 | ||
RTECS 번호 | WI2800000 | ||
자연 발화 온도 | 395 °C | ||
TSCA | Yes | ||
HS 번호 | 38231100 | ||
유해 물질 데이터 | 57-11-4(Hazardous Substances Data) | ||
독성 | LD50 i.v. in mice, rats: 23±0.7, 21.5±1.8 mg/kg, L. Or, A. Wretlind, Acta Pharmacol. Toxicol. 18, 141 (1961) | ||
기존화학 물질 | KE-26333 |
스테아르산 C화학적 특성, 용도, 생산
용도
"일반적으로 스테아르산의 활용은 금속 양이온에 부착될 수 있는 극성 머리 부분과 유기 용매에 용해성을 가진 비극성 사슬의 양친매적인 성질을 이용한다. 스테아르산은 주로 샴푸, 면도 크림 제품과 같은 세제, 비누 및 화장품의 생산에 사용된다. 윤활제, 연화제 및 이형제"용도
"스테아르산은 납 축전지 제조시 음극판 첨가제로도 사용된다. 오래전부터 지방산은 양초 제조 과정에서 필요한 성분이었다. 스테아르산은 단순당 또는 옥수수 시럽과 함께 사탕 제조에서 경화제로 사용된다.스테아르산은 식이 보조 제품 생산에 사용된다. 스테아르산은 종종 불꽃놀이에서 알루미늄 및 철과 같은 금속 분말을 코팅하는데 사용된다. 이는 산화를 방지하여 구성 물질들을 보다 오랜 시간동안 저장할 수 있게 한다. 스테아르산은 세라믹 분말의 사출 성형 및 압축 공정에서 일반적인 윤활제이다. 또한 석재 몰드에서 구워지는 폼 라텍스의 이형제로 사용된다."용도
플라스틱 가공 : PVC, PP, PE 등에서 사용되는 가소제, 윤활제, 대전 방지제, 방담 제, 노화 방지제 및 발포제생산/준비/합성
"스테아르산은 뜨거운 물(약 100°C)을 사용하여 트라이글리세라이드의 비누화에 의해 지방 및 오일로부터 얻는다. 이어서, 생성된 혼합물을 증류시킨다. 정제된 스테아르산을 이용할 수 있지만, 상업용 스테아르산은 보통 스테아르산과 팔미트산의 혼합물이다. 스테아르산이 풍부한 지방과 오일은 식물성 지방(일반적으로 5% 미만)보다 동물성 지방(30% 까지)에 더 풍부하다. 중요한 예외는 코코아 버터와 시어버터이며, 스테아르산 함량(트라이글리세라이드 로)은 28~48%이다. 생합성 과정에서 스테아르산은 아세틸-CoA가 2탄소 단위를 제공하는 지방산의 합성 과정을 통해 탄수화물로부터 생성된다."정의
이 품목은 지방에서 얻어지는 고형지방산으로서 스테아린산(C18H36O2) 및 팔미트산(C16H32O2)의 혼합물로 이루어져 있으며, 그 주성분은 스테아린산(C18H36O2)이다.
강열잔류물
이 품목 2g을 취하여 강열잔류물시험법에 따라 시험할 때, 그 양은 0.1% 이하이어야 한다.
개요
Stearic acid (STAIR-ik or STEER-ik) is the saturated fatty acid with an 18 carbon chain and has the IUPAC name octadecanoic acid. It is a waxy solid, and its chemical formula is CH3(CH2)16CO2H. Its name comes from the Greek word στ?αρ "stéar", which means tallow. The salts and esters of stearic acid are called stearates. Stearic acid is one of the most common saturated fatty acids found in nature following palmitic acid.화학적 성질
Stearic acid, CH3(CH2)16COOH, is a white or colorless, waxlike solid with a melting point of 70°C (158 OF), and a boiling point of 232°C (450 OF) at 2 kPa. It is soluble in alcohol, ether, and chloroform,and is insolublein water. Stearic acid, nature's most common fatty acid, is derived from natural animal and vegetable fats. Also known as n-octadecanoic acid, stearic acid is used in the preparation of metallic stearates, as a lubricant, and in pharmaceuticals, cosmetics, candles, and food packaging.출처
Stearic acid is naturally present in the glycerides of animal fats and most vegetable oils. Reported found in fresh apple, banana, Vitis vinifera L., melon, tomato, ginger, blue cheeses, cheddar cheese, Swiss cheese, feta cheese, buttermilk, raw fatty fish, raw lean fish, raw shrimp, grapefruit juice, guava, papaya, cucumber, saffron, pork and lamb liver, pork fat, hop oil, beer, cognac, rum, whiskies, sherry, tea, peanut oil, soybean, roast coconut, coconut milk, avocado, passion fruit, rose apple, mushroom, starfruit, fenugreek, mango, cardamom, cooked rice, prickly pear, dill seed, buckwheat, malt, wort, cassava, loquat, shrimp, crab, cape gooseberry and Chinese quince.용도
stearic acid is an emulsifier and thickening agent found in many vegetable fats. Stearic acid is the main ingredient used in making bar soaps and lubricants. It occurs naturally in butter acids, tallow, cascarilla bark, and in other animal fats and oils. Stearic acid may cause allergic reactions in people with sensitive skin and is considered somewhat comedogenic.정의
ChEBI: A C18 straight-chain saturated fatty acid component of many animal and vegetable lipids. As well as in the diet, it is used in hardening soaps, softening plastics and in making cosmetics, candles and plastics.제조 방법
Commercially it is produced by the hydrogenation of the unsaturated 18-carbon fatty acids of soybean, cottonseed or other vegetable oils. When obtained from animal fats by hydrolysis and fractional crystallization, commercial stearic acid is a mixture of solid organic acids, chiefly palmitic and stearic acids. Commercial products containing about 90% stearic acid are produced by hydrolysis and crystallization of a completely hydrogenated vegetable oil or by fractional distillation of fatty acid mixtures obtained from tallow생산 방법
Stearic acid is manufactured by hydrolysis of fat by continuous exposure to a countercurrent stream of high-temperature water and fat in a high-pressure chamber. The resultant mixture is purified by vacuum steam distillation and the distillates are then separated using selective solvents.Stearic acid may also be manufactured by the hydrogenation of cottonseed and other vegetable oils; by the hydrogenation and subsequent saponification of olein followed by recrystallization from alcohol; and from edible fats and oils by boiling with sodium hydroxide, separating any glycerin, and decomposing the resulting soap with sulfuric or hydrochloric acid. The stearic acid is then subsequently separated from any oleic acid by cold expression.
Stearic acid is derived from edible fat sources unless it is intended for external use, in which case nonedible fat sources may be used. The USP32–NF27 states that stearic acid labeled solely for external use is exempt from the requirement that it be prepared from edible sources. Stearic acid may contain a suitable antioxidant such as 0.005% w/w butylated hydroxytoluene.
일반 설명
White solid with a mild odor. Floats on water.공기와 물의 반응
Slightly soluble in water.반응 프로필
Stearic acid is incompatible with strong oxidizers and strong bases. Stearic acid is also incompatible with reducing agents.건강위험
Compound is generally considered nontoxic. Inhalation of dust irritates nose and throat. Dust causes mild irritation of eyes.화재위험
Stearic acid is combustible. Stearic acid can heat spontaneously.Pharmaceutical Applications
Stearic acid is widely used in oral and topical pharmaceutical formulations. It is mainly used in oral formulations as a tablet and capsule lubricant, although it may also be used as a binder or in combination with shellac as a tablet coating. It has also been suggested that stearic acid may be used in enteric tablet coatings and as a sustained-release drug carrier.In topical formulations, stearic acid is used as an emulsifying and solubilizing agent. When partially neutralized with alkalis or triethanolamine, stearic acid is used in the preparation of creams. The partially neutralized stearic acid forms a creamy base when mixed with 5–15 times its own weight of aqueous liquid, the appearance and plasticity of the cream being determined by the proportion of alkali used.
Stearic acid is used as the hardening agent in glycerin suppositories.
Stearic acid is also widely used in cosmetics and food products.
Safety Profile
Poison by intravenous route. A human sktn irritant. Questionable carcinogen with experimental tumorigenic data by implantation route. Combustible when exposed to heat or flame. Heats spontaneously. To fight fire, use CO2, dry chemical. When heated to decomposition it emits acrid smoke and irritating fumes.Safety
Stearic acid is widely used in oral and topical pharmaceutical formulations; it is also used in cosmetics and food products. Stearic acid is generally regarded as a nontoxic and nonirritant material. However, consumption of excessive amounts may be harmful.LD50 (mouse, IV): 23 mg/kg
LD50 (rat, IV): 21.5 mg/kg
Carcinogenicity
Stearic acid was administered subcutaneously to several groups of Swiss–Webster mice at doses of 0.05 or 0.5mg once weekly for 25 weeks (total dose of 1.3–130 mg), 1.0 mg thrice a week for a total of 10 injections or 1.0 mg twice weekly for a total of 82 injections. No neoplasms were reported in these studies . In 3 groups of 10–15 BALB/c mice administered 0.05 mg or 0.5 mg stearic acid (twice weekly for 52 or 57 weeks), one pulmonary neoplasm was detected in each group after 19–21 months.Afewsubcutaneous sarcomas and one adrenal carcinoma were also reported.No injection site sarcomas or other carcinogenic effects were reported by the same authors in a later study of mice injected with 0.05–0.5 mg weekly for 26 weeks. Rats given subcutaneous injections of 0.05 or 0.5 mg stearic acid weekly for 26 weeks did not develop sarcomas at the site of injection. When rat fibroblast cells were transfected with an activated human c-H-ras oncogene and the cells subsequently grown in a medium supplemented with stearic acid (20–80 mM), there was a marked increase in the number of transformed foci. Stearic acid inhibited the colony-forming ability of four out of five rat and two human tumor continuous cell lines in vitro. Using rats pretreated with nitrosomethyl urea as a model for mammary carcinoma, Habib et al. demonstrated that subcutaneous injection of stearic acid at weekly intervals prevented tumor development. Increasing levels of stearate in the diet resulted in decreased mammary tumor incidence and increased time to tumor in mice.신진 대사
An isotope labeling study in humans concluded that the fraction of dietary stearic acid oxidatively desaturated to oleic acid was 2.4 times higher than the fraction of palmitic acid analogously converted to palmitoleic acid. Also, stearic acid was less likely to be incorporated into cholesterol esters. In epidemiologic and clinical studies stearic acid was associated with lowered LDL cholesterol in comparison with other saturated fatty acids. These findings may indicate that stearic acid is healthier than other saturated fatty acids.저장
Stearic acid is a stable material; an antioxidant may also be added to it. The bulk material should be stored in a wellclosed container in a cool, dry place.Purification Methods
Crystallise stearic acid from acetone, acetonitrile, EtOH (5 times), aqueous MeOH, ethyl methyl ketone or pet ether (b 60-90o), or by fractional precipitation by dissolving in hot 95% EtOH and pouring into distilled water, with stirring. The precipitate, after washing with distilled water, is dried under vacuum over P2O5. It has also been purified by zone melting and partial freezing. [Tamai et al. J Phys Chem 91 541 1987, Beilstein 2 IV 1206.]비 호환성
Stearic acid is incompatible with most metal hydroxides and may be incompatible with bases, reducing agents, and oxidizing agents.Ointment bases made with stearic acid may show evidence of drying out or lumpiness due to such a reaction when compounded with zinc or calcium salts.
A number of differential scanning calorimetry studies have investigated the compatibility of stearic acid with drugs. Although such laboratory studies have suggested incompatibilities, e.g. with naproxen, they may not necessarily be applicable to formulated products.
Stearic acid has been reported to cause pitting in the film coating of tablets applied using an aqueous film-coating technique; the pitting was found to be a function of the melting point of the stearic acid.
Regulatory Status
GRAS listed. Accepted as a food additive in Europe (fatty acids). Included in the FDA Inactive Ingredients Database (sublingual tablets; oral capsules, solutions, suspensions, and tablets; topical and vaginal preparations). Included in nonparenteral medicines licensed in the UK. Included in the Canadian List of Acceptable Non-medicinal Ingredients.스테아르산 준비 용품 및 원자재
원자재
D-소비톨
1,2,3-프로페인트라이일 옥타데칸산염
cow oil
tea oil
대두 기름
목욕용 왁스
산화아연
코코아 염화물
벤젠술폰 산
FATTY ACID MIXTURE
식물성 기름
피마자유
FATS 동물성, MIXED WITH 식물성 기름, 메틸 에스테르, 황화된
Synthetic fat
D-솔비톨
오레인산
수산화나트륨
지방산,C8-10,트리메틸올프로판함유트리에스테르
라이스 브랜 오일
아메리카오일팜열매오일
준비 용품
Emulsifier FM
water proofing agent 703
스테아린산칼슘
softener TC
Water quality stabilizer
폴리에틸렌 글리콜 디스테아린산
N,N'-에틸렌디스테아라미드
스테아르산 카드뮴(카드뮴 화합물질)
스테아로일유산칼슘
드로모스타놀론
알루미늄 디스테아린산
에텐일 옥타데칸산
에리드로마이신 스테아레이트
lauryl glycerine stearate
유연제IS
스테아린산바륨
스테아린산뷰틸
softening agent EST
폴리에틸렌 글리콜 모노스테아린산
ROSAPROSTOL
Lead stearate,dibasic
Greasing agent,cationic
softening agent SCI-A
calcium stearyl lactate
이소부틸렌-이소프렌 공중합체
메틸 스테아레이트
Water proof agent CR
softening agent HC
Aluminate coupling agent
Tween series
디메틸노르말데실아민
스테아린산 이소프로필
Polyvinyl chloride pipe material
스테아릴젖산나트륨
L-아스코르빈산스테아린산에스테르
STEAROYL CHLORIDE
Span series
폴리에틸렌 글리콜 스테아릴 에테르
스테아린산아연
스테아린산 알루미늄
스테아르산 공급 업체
글로벌( 1321)공급 업체
공급자 | 전화 | 이메일 | 국가 | 제품 수 | 이점 |
---|---|---|---|---|---|
SHANDONG ZHI SHANG CHEMICAL CO.LTD | +86 18953170293 |
sales@sdzschem.com | China | 2931 | 58 |
ShanDong Look Chemical Co.,Ltd. | +8617653113219 |
sales01@sdlookchemical.com | China | 2739 | 58 |
Aladdin Scientific | +1-+1(833)-552-7181 |
sales@aladdinsci.com | United States | 57511 | 58 |
ZHEJIANG JIUZHOU CHEM CO., LTD | +86-0576225566889 +86-13454675544 |
admin@jiuzhou-chem.com;jamie@jiuzhou-chem.com;alice@jiuzhou-chem.com | China | 12272 | 58 |
Hebei Mojin Biotechnology Co., Ltd | +8613288715578 |
sales@hbmojin.com | China | 12450 | 58 |
Hebei Yanxi Chemical Co., Ltd. | +86-17531190177; +8617531190177 |
peter@yan-xi.com | China | 5873 | 58 |
Hebei Guanlang Biotechnology Co,.LTD | +8619930503252 |
daisy@crovellbio.com | China | 5828 | 58 |
Hebei Kingfiner Technology Development Co.Ltd | +86-15532196582 +86-15373005021 |
lisa@kingfinertech.com | China | 2989 | 58 |
Shaanxi Haibo Biotechnology Co., Ltd | +undefined18602966907 |
qinhe02@xaltbio.com | China | 1000 | 58 |
Hebei Xinsheng New Material Technology Co., LTD. | +86-16632316109 |
xinshengkeji@xsmaterial.com | China | 1090 | 58 |