自茜草根和其它茜草科植物提取的天然著色劑之一，自西元1920年代便以氧化茜草色素的合成方式製成。茜草紫與鋁鹽媒染時，能產生亮紅色。紅紫素並不被認為是具永久性的繪畫顏料。

紅紫素(P,,U,繁體中文-偏好,D,U,U)
hung tzu su(P,,U,韋氏拼音-偏好,UF,U,U)
hóng zǐ sù(P,,U,漢語拼音-偏好,UF,U,U)
hong zi su(P,,U,漢語拼音(無聲調)-偏好,UF,U,U)
purpurin(colorant)　(P,,U,英文-偏好,D,U,N)
purpurine(,U,英文-非偏好,UF,U,N)
purpurine(,U,荷蘭語-偏好,D,U,U)
purpurina(P,,U,西班牙語-偏好,D,U,U)

藝術與建築詞典根目錄
....材料層面
........材料 (材料層面)
............材料
................<依功能區分之材料>
....................著色劑 (材料)
........................染料 (著色劑)
............................<依構成要素或來源區分之染料>
................................天然染料
....................................植物染料
........................................紅紫素

藝術與建築詞典根目錄
....材料層面
........材料 (材料層面)
............材料
................<依功能區分之材料>
....................著色劑 (材料)
........................<染料或顏料之著色劑>
............................紅紫素

constituent part for....

茜草色澱(著色劑)

英文....	One of the natural colorants extracted from madder roots and other Rubiaceae family plants. It has been manufactured synthetically by the oxidation of alizarin since the 1920s. Purpurin forms a brilliant red color when mordanted with aluminum salts. It is not considered a permanent artists pigment.
荷蘭語....	Verschillende gekleurde samenstellingen die worden verkregen uit bladgroen of verwante verbindingen, door de werking van koude alcoholhoudende alkali en zuurstof; nauw verwant aan chloriden.
西班牙語....	Cualquiera de varios compuestos coloreados que se obtienen de la clorofila o de compuestos relacionados a través de la acción de álcali alcohólico frío y oxígeno y estrechamente relacionado con las clorinas.

紅紫素............	[AS-Academia Sinica]
.................	藝術名詞與技法辭典 p. 369
hung tzu su............	[AS-Academia Sinica]
.................	TELDAP database (2009-)
hóng zǐ sù............	[AS-Academia Sinica]
.................	TELDAP database (2009-)
hong zi su............	[AS-Academia Sinica]
.................	TELDAP database (2009-)
purpurin(colorant)............	[VP]
.................	Mayer, Dictionary of Art Terms and Techniques (1969)
.................	Brady and Clauser, Materials Handbook (1986) 472
.................	Webster's Third New International Dictionary (1961)
.................	AATA database (1995-) 127883 checked 26 January 2012
purpurine............	[VP]
.................	Webster's Third New International Dictionary (1961)
.................	AAT-Ned (1994-)
purpurina............	[CDBP-DIBAM]
.................	Moliner, Diccionario de uso del español (2004) II:896
Subject:............	[AS-Academia Sinica]
.................	AATA database (1995-) 127883 checked 26 January 2012
.................	Van Dale Engels-Nederlands (1989)

Getty AAT: 300152010 Getty AAT: http://www.getty.edu/vow/AATFullDisplay?find=costume&logic=AND¬e=&subjectid=300152010
聯合目錄： 紅紫素 、hung tzu su 、hóng zǐ sù 、hong zi su 、purpurin 、purpurine 、purpurine 、purpurina