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20 Types of dye materials are selected. Most of them are plants, including flowers, fruits and roots. Two are insects. Two types of mineral are used as mordants.


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Chinese: 硫酸亞鐵

English: Iron(II) sulfate

Chemical formula: FeSO4

Category: Mineral


Iron(II) sulfate, also known as ferrous sulfate, is a type of iron salt that is used for a variety of applications. It is commonly used as a nutritional supplement to treat iron-deficiency anemia, as it is a source of iron that can be easily absorbed by the body.


Ferrous sulfate is available in different forms, including tablets, capsules, and liquid solutions. It is generally considered safe when used as directed, but like all supplements, it can cause side effects in some people. Common side effects include constipation, diarrhea, nausea, and stomach upset.


In agriculture, ferrous sulfate is used as a fertilizer to provide iron to plants that require it for proper growth and development. It can also be used to correct iron deficiencies in soil, which can lead to stunted growth and poor crop yields.


Ferrous sulfate can be used as a mordant in the dyeing process to create certain colors on fabric. It is particularly useful for creating darker colors, such as black, gray, and navy blue. It has a strong affinity for tannins, which are found in many natural dyes. When the fabric is treated with ferrous sulfate before being dyed, the tannins in the dye are attracted to the ferrous ions in the mordant, creating a deeper, more saturated color.


It should be noted that while ferrous sulfate can produce beautiful and long-lasting colors, it can also be toxic if ingested or inhaled in large amounts. It is important to handle ferrous sulfate with care and to follow appropriate safety precautions when using it in the dyeing process.


硫酸亞鐵,是用途廣泛的鐵鹽。 它是一種容易被人體吸收的鐵源,通常用作治療缺鐵性貧血的營養補充劑。






硫酸亞鐵可在染色過程中用作媒染劑,使織物呈現特定顏色。它特別適用於製作較深的顏色,例如黑色、灰色和海軍藍色。它對單寧酸有很強的親合力,而單寧酸存在於許多天然染料中。 當織物在染色前用硫酸亞鐵處理時,染料中的單寧會被媒染劑中的亞鐵離子吸引,從而產生更深、更飽和的顏色。



 1.  Logwood

 2.  Lac bugs

 3.  Comfrey

 4.  Cochineal

 5.  Madder

 6.  Connected shell

 7.  Knotweed

 8.  Huai Mi

 9.  pomegranate peel

10. Wormwood

11. Reseda(Weld)

12. winter green

13. cork

14. onion skin

15. chestnut

16. coconut

17. Hanna

18. five companions

19. black bean coat

20. Viola



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