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인디고

인디고
인디고 구조식 이미지
카스 번호:
482-89-3
한글명:
인디고
동의어(한글):
인디고;3H-인돌-3-온,2-(1,3-다이하이드로-3-옥소-2H-인돌-2-일리덴)-1,2-다이하이드로-(인디고블루);청색201호;3H-인돌-3-온, 2-(1,3-다이하이드로-3-옥소-2H-인돌-2-일리덴)-1,2-다이하이드로-(인디고 블루);C.I. Vat Blue;D & C Blue No. 6;인디고 블루
상품명:
Indigo
동의어(영문):
otin;Indig;AO201;INDIGO;Lndigo;indigoj;indigon;indigop;Indigo J;Indigo N
CBNumber:
CB7459700
분자식:
C16H10N2O2
포뮬러 무게:
262.26
MOL 파일:
482-89-3.mol

인디고 속성

녹는점
>300 °C(lit.)
끓는 점
405.51°C (rough estimate)
밀도
1.01 g/mL at 20 °C
굴절률
1.5800 (estimate)
인화점
>220℃
저장 조건
Sealed in dry,Room Temperature
산도 계수 (pKa)
-3.83±0.20(Predicted)
물리적 상태
Powder
색상 색인 번호
73000
색상
Dark blue to violet
수용성
<0.1 g/100 mL
Merck
14,4943
BRN
88275
안정성
Stable. Incompatible with strong oxidizing agents.
InChIKey
COHYTHOBJLSHDF-BUHFOSPRSA-N
CAS 데이터베이스
482-89-3(CAS DataBase Reference)
NIST
c.i. Vat blue 1(482-89-3)
EPA
C.I. Vat Blue 1 (482-89-3)
안전
  • 위험 및 안전 성명
  • 위험 및 사전주의 사항 (GHS)
위험품 표기 Xi,Xn
위험 카페고리 넘버 36/38-36/37/38-48/20/21/22
안전지침서 26-36
유엔번호(UN No.) UN 3264 8/PG 3
WGK 독일 1
RTECS 번호 DU2988400
HS 번호 32041510
유해 물질 데이터 482-89-3(Hazardous Substances Data)
독성 LD50 oral in mouse: > 32gm/kg
기존화학 물질 KE-08786
그림문자(GHS):
신호 어: Warning
유해·위험 문구:
암호 유해·위험 문구 위험 등급 범주 신호 어 그림 문자 P- 코드
H315 피부에 자극을 일으킴 피부부식성 또는 자극성물질 구분 2 경고 P264, P280, P302+P352, P321,P332+P313, P362
H319 눈에 심한 자극을 일으킴 심한 눈 손상 또는 자극성 물질 구분 2A 경고 P264, P280, P305+P351+P338,P337+P313P
H373 장기간 또는 반복 노출되면 장기(또는, 영향을 받은 알려진 모든 장기를 명시)에 손상을 일으킬 수 있음 특정 표적장기 독성 - 반복 노출 구분 2 경고 P260, P314, P501
예방조치문구:
P260 분진·흄·가스·미스트·증기·...·스프레이를 흡입하지 마시오.
P264 취급 후에는 손을 철저히 씻으시오.
P264 취급 후에는 손을 철저히 씻으시오.
P280 보호장갑/보호의/보안경/안면보호구를 착용하시오.

인디고 MSDS


Indigo

인디고 C화학적 특성, 용도, 생산

개요

Indigo, known chemically as indigotin, is a common blue dye that has been highly valued throughout history and has played a major role in trade and commerce since ancient times. The term indigo is often used to describe many blue dyes produced from a number of plants. For example, woad, a blue dye obtained from the plant Isatis tinctoria, was used throughout the Mediterannean and Europe and is often identified as indigo. True indigo comes from the leguminous plant of the genus Indigofera.
The Indigofera genus includes several hundred species, and indigo has been obtained from a number of these, but the dominant species for the dye are Indigofera tinctoria grown mainly in India and tropical Asia and Indigofera suff ructiosa from the tropical Americas. The name indigo comes from the Greek indikon and Latin indicum meaning “dye from India.” There is evidence that indigo was used several thou sand years b.c.e. Persian rugs containing indigo color exist from several thousand years b.c.e. Textile artifacts from Egyptian tombs provide evidence of indigo’s use by royalty from as far back as 2500 b.c.e. The writings of Herodotus from approximately 450 b.c.e. mention indigo’s use in the Mediterranean area.

화학적 성질

dark violet powder

출처

Indigo is a perennial shrub found in several regions of the world.

역사

Indigotin. The blue dye of the ancient world was derived from indigo and woad. Which plant is the oldest is a matter of conjecture. That indigo was known at least four thousand years ago is evident from ancient Sanskrit writings. Cloth dyed with indigotin (CI Natural Blue; CI 75780) has been found in Egyptian tombs and in the graves of the Incas in South America. Indigo belongs to the legume family. The two most important species are Indigo tinctoria and I. suffruticosa, found in India and the Americas, respectively. The leaves of the indigo plant do not contain the dye as such, but in the form of its precursor, a glycoside known as indican.

용도

In recent years researchers have used genetic engineering using Escherichia coli to convert tryptophan into indigo. The desire for natural organic products has also revived traditional production methods of indigo on a small scale. Indigo's dominant use is as a textile dye, but indigo-related compounds have limited use as indicators and in food coloring.the Food and Drug Administration's FD&C Blue #2 contains indigotine (also known as indigo carmine), which is a sulfonated sodium salt of indigo.

용도

As textile dye. In sutures.

정의

A double indole derivative.

정의

indigo: A blue vat dye, C16H10N2O2.It occurs as the glucoside indican inthe leaves of plants of the genus Indigofera,from which it was formerlyextracted. It is now made synthetically.

생산 방법

The first synthesis of indigo is attributed to Adolf von Baeyer (1835–1917), who began hisquest to synthesize indigo in 1865 but was not able to produce indigo until 1878. The syntheticproduction of indigo was first described by Baeyer and Viggo Drewson in 1882; Baeyeralso identified the structure of indigo in 1882.the Baeyer-Drewson synthesis of indigo startedwith 2-nitrobenzaldehyde and acetone proceeding through a series of steps in alkali solution.Baeyer’s work was not commercially viable, and it was not until 1897 that BASF (BadischeAnalin und Soda Fabrik) started to produce indigo commercially using a process developedby Karl von Heumann (1851–1894) that started with naphthalene. The synthetic productionof indigo spelled the end of traditional methods of indigo production. By the second decadeof the 20th century, nearly all indigo was produced synthetically.

생산 방법

K. Heumann treated N-phenylglycine with alkali and obtained indoxyl (keto form), which on aerial oxidation converted to indigotin. Later, a variation of the original Heumann process was made: aniline, formaldehyde, and hydrogen cyanide react to form phenylglycinonitrile, which is hydrolyzed to phenylglycine. This is the most widely used process for manufacturing indigotin. The greatest improvement in the manufacture of indigotin came when sodamide was used with alkali in the conversion of phenylglycine to indoxyl. Although there is still demand for indigotin for dyeing blue jeans, it has lost a good part of the market to other blue dyes with better dyeing properties.

일반 설명

Dark blue powder with coppery luster. Occurs in isomeric forms (cis and trans). In solid state Indigo is in the trans form.

공기와 물의 반응

Insoluble in water.

건강위험

ACUTE/CHRONIC HAZARDS: Indigo may cause irritation of the skin and mucous membranes.

화재위험

Flash point data for Indigo are not available but Indigo is probably combustible.

Safety Profile

Mutation data reported. Whenheated to decomposition it emits toxic vapors of NOx.

Properties and Applications

TEST ITEMS

SPECIFICATION

APPEARANCE

BLUE POWDER

SHADE

GREENISH

HEAT RESISTANCE

180 °C min

LIGHT FASTNESS

7

ACID RESISTANCE

3

ALKALI RESISTANCE

4

FASTNESS TO BLEEDING

4

OIL ABSORPTION

40-50%

SPECIFIC SURFACE

27 m 2 /g

DENSITY

1.60 g/cm 3

RESIDUE ON 80 MESH

5.0% max

WATER SOLUBLE

1.0% max

VOLATITE 105 °C

1.0% max

TINTING STRENGTH

100-105 %

Purification Methods

First reduce indigo in alkaline solution with sodium hydrosulfite, and filter. The filtrate is then oxidised by air, and the resulting precipitate is filtered off, dried at 65-70o, ground to a fine powder, and extracted with CHCl3 in a Soxhlet extractor. Evaporation of the CHCl3 extract gives the purified dye. [Brode et al. J Am Chem Soc 76 1034 1954; spectral characteristics are listed, Beilstein 24 II 233, 24 III/IV 1791.]

인디고 준비 용품 및 원자재

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