Ferrous Lactate

$9.90

Shipping calculated at checkout.

Pickup available at eHouse Rishon

Usually ready in 24 hours

Reliable shipping

Flexible returns

Ferrous lactate is a new type of ferrous mordant, offering dyers an alternative to traditional ferrous sulfate. It can be used both as a mordant and a post-mordant to alter or deepen shades. Like ferrous sulfate, it reacts strongly with tannins, shifting them to grey or black, but it produces distinct and sometimes subtler tones compared to regular iron mordants.

This mordant is derived from lactic acid produced from fermented, renewable food sources, making it a more sustainable option.

Applications in Dyeing

Use as a mordant or post-mordant.
Especially effective for shading botanical prints and tannin-rich dyes.
Enhances depth, contrast, and durability of colours.

Notes

Easily soluble in water.
Produces different shades than traditional ferrous sulfate.
Suitable for both dyeing and eco-printing.

Tech Specs

Appearance: greenish-white crystals or light green powder
Odour: slight, characteristic
Taste: mild, sweet, ferruginous (not for food use here)
Stability: darkens on exposure to air, becomes incompletely soluble
Storage: keep dry and dark in a clearly marked container
Safety: wear a mask when handling dry powder

CAS No. 5905-52-2
HS Code 29181100

Note on Other Uses
While ferrous lactate is also used in the food industry as an acidity regulator, iron supplement, and colour-retention agent (e.g. in olives), the Natural Dye Store offers this material exclusively as a mordant and does not recommend it for any other purpose.

Safety & handling

For textile dyeing and craft use only. Not for food, cosmetic, medical or household-cleaning use.

Avoid contact with skin and eyes. Powder and solutions may cause irritation.
Do not release concentrated product or spent mordant baths into drains, soil or waterways.
Keep out of reach of children and pets.
Avoid creating or breathing dust. Measure carefully in a well-ventilated work area and use suitable respiratory protection for fine particulates when dust cannot be avoided.
Wear suitable protective gloves, protective clothing and eye protection. Wash hands thoroughly after handling.
Do not eat, drink or smoke while using this product. Use dedicated tools and containers that will never be used for food.
Store tightly closed, dry, clearly labelled and away from food, drink and incompatible materials.
Eyes: Rinse cautiously with clean water for several minutes. Remove contact lenses if easy to do and continue rinsing. Seek urgent medical advice for persistent irritation, pain or impaired vision.
Swallowed or inhaled: Move to fresh air after inhalation. If swallowed, rinse the mouth and contact a poison centre or medical professional; do not induce vomiting unless instructed.

Important: Follow the package label and the current Safety Data Sheet for the exact product. Formal hazard classification can depend on chemical form, hydration, purity and composition. For the latest safety documentation, contact info@naturaldyestore.com.

Seller and safety contact: Natural Dye Store, Derech HaMaccabim 58, Rishon LeZion, Israel · info@naturaldyestore.com

Dosage

0.5–2% WOF for botanical printing and natural dyeing.
Use lower amounts for subtle shading, higher amounts for deeper greys and blacks.

Instructions for Use

Weigh the required amount (0.5–2% WOF).
Dissolve powder fully in water at room temperature.
Add pre-wetted fibres or prints.
Mordant or post-mordant as desired.
Some dyers follow with a “dunging” bath (wheat bran or calcium carbonate), though rinsing well is generally sufficient.

For external use only. Not edible.
Keep away from children and pets.
Wear gloves and mask when handling powders.
Avoid inhalation of dust and contact with eyes.

Store in a cool, dry place away from direct sunlight. Reseal tightly after use.

Naturally derived and carefully processed from trusted sources to ensure safe use in dyeing and textile applications.

This product complies with the General Product Safety Regulation (EU) 2023/988 (GPSR).

Packed and distributed by The Natural Dye Store, eHouse Rishon, Derech HaMaccabim 58, 7535998 Rishon LeZion, Israel. Contact: Suzanne Tamar Dekel, info@naturaldyestore.com, +972 52-541-0033.