GOTS, OEKO-TEX and ZDHC Level 3
certified reactive dyes.
If your buyers demand certified inputs, COTFIX® clears the gate. Every certificate on this page is current, third-party issued, and verifiable by its number — not a claim, a document you can check.
The four documents that matter
Letter of Approval N° GOTS-C 810113-01-2024, issued by CU Inspections & Certifications India (Control Union), Navi Mumbai, 3 June 2024. 24 COTFIX colourants approved as inputs for GOTS-certified textile processing. Formulator audited for product stewardship, environment, health & safety on 27 April 2024.
Certificate 21.0.64039, issued by Hohenstein Laboratories, Bönnigheim, 27 July 2026. Product category 2.6 Reactive dyes — 55 COTFIX products certified. Type: ECO PASSPORT with Self-Assessment, supported by test report 26.0.74900 and an RSL screening report.
Letter of Conformance ZDHC-C 810113-01.2024, issued 19 February 2024 under the Control Union SAVE programme (Systematic Analysis Valuable to Environment). Assessed against ZDHC MRSL V3.1 with a positive result. 24 colourants published on the ZDHC Gateway under ID A854AG52.
No banned chemicals, APEO/NPEO, or SVHC candidate-list substances used or intentionally added. Products are non-hazardous, non-flammable and eco-friendly.
The 24 GOTS-approved colourants
Listed exactly as they appear in the appendix to Letter of Approval GOTS-C 810113-01-2024. If a shade you need is on this list, a GOTS-certified processor can dye with it without breaking the chain of custody.
| # | Trade name | Utilisation |
|---|---|---|
| 1 | COTFIX NAVY BLUE RGB | Dyes / Colours |
| 2 | COTFIX BLACK 2N | Dyes / Colours |
| 3 | COTFIX BLACK 2R | Dyes / Colours |
| 4 | COTFIX BLACK B | Dyes / Colours |
| 5 | COTFIX BLACK WNN | Dyes / Colours |
| 6 | COTFIX BLUE BB | Dyes / Colours |
| 7 | COTFIX BLUE BFN | Dyes / Colours |
| 8 | COTFIX BLUE HEGN | Dyes / Colours |
| 9 | COTFIX BLUE R | Dyes / Colours |
| 10 | COTFIX BLUE RGB | Dyes / Colours |
| 11 | COTFIX ORANGE 3R | Dyes / Colours |
| 12 | COTFIX ORANGE CDR | Dyes / Colours |
| 13 | COTFIX ORANGE ME2RL | Dyes / Colours |
| 14 | COTFIX RED BS | Dyes / Colours |
| 15 | COTFIX RED CD | Dyes / Colours |
| 16 | COTFIX RED CDR | Dyes / Colours |
| 17 | COTFIX RED ME4BL | Dyes / Colours |
| 18 | COTFIX RED RGB | Dyes / Colours |
| 19 | COTFIX SKY BLUE G | Dyes / Colours |
| 20 | COTFIX TURQUOISE BLUE G | Dyes / Colours |
| 21 | COTFIX YELLOW CDR | Dyes / Colours |
| 22 | COTFIX YELLOW ME4GL | Dyes / Colours |
| 23 | COTFIX YELLOW MERL | Dyes / Colours |
| 24 | COTFIX YELLOW RGB | Dyes / Colours |
All 24 carry a date of approval of 3 June 2024 against MSDS dated 1 January 2024. The separate OEKO-TEX ECO PASSPORT certificate covers a wider set of 55 COTFIX products.
What each certificate actually gets you
Certification language is dense by design. Here is what each document means in practice when a brand or a mill audits your supply chain.
GOTS lets your fabric stay organic-certified
GOTS governs the whole chain, not just the fibre. A mill dyeing GOTS-certified cotton must use approved colourants or the finished fabric loses its certification. Because 24 COTFIX colourants sit on the approved-inputs list under GOTS-C 810113-01-2024, a GOTS-certified processor can dye with them without breaking the chain of custody. Version 7.0 is the current standard.
ECO PASSPORT clears STANDARD 100 in advance
OEKO-TEX ECO PASSPORT verifies a chemical product against the same restricted-substance criteria that finished textiles face under STANDARD 100. Screening happens at the dye, before it ever reaches fabric — so a mill working toward STANDARD 100 certification is not gambling on inputs. Certificate 21.0.64039 covers 55 COTFIX products under category 2.6, reactive dyes.
ZDHC Level 3 is the tier brands ask for by name
ZDHC MRSL conformance runs in three levels. Level 1 is a self-declaration. Level 2 adds analytical testing. Level 3 adds a third-party audit of the manufacturing site itself — the ZDHC Gateway records who holds it. Global brands increasingly specify Level 3 in supplier requirements, and it is the tier COTFIX holds under ZDHC-C 810113-01.2024, verifiable on the Gateway under ID A854AG52.
REACH declaration covers the EU question
Buyers exporting into the European Union will ask about SVHC candidate-list substances and APEO/NPEO surfactants. The declaration answers that directly: none used, none intentionally added. Products are classified non-hazardous and non-flammable, which also simplifies shipping documentation.
Verifying these yourself
Every number on this page is checkable without going through us — which is the point of quoting them.
Search the Gateway for ID A854AG52 to see the published ChemCheck report and current conformance level.
GOTS and ZDHC letters are issued by Control Union and can be validated against reference 810113.
ECO PASSPORT certificate 21.0.64039 is verifiable through the OEKO-TEX certificate check.
Signed PDF copies of any certificate are sent on request, usually the same working day.
Questions buyers ask
The four that come up in almost every compliance conversation.
Are COTFIX reactive dyes GOTS approved?
Yes. 24 COTFIX colourants are approved as inputs for GOTS-certified textile processing under Letter of Approval GOTS-C 810113-01-2024, issued by Control Union against Global Organic Textile Standard v7.0.
What ZDHC conformance level does Nuchem hold?
Level 3 — the highest ZDHC MRSL v3.1 conformance tier. Letter of Conformance ZDHC-C 810113-01.2024 via the Control Union SAVE programme, covering 24 colourants published on the ZDHC Gateway under ID A854AG52.
Do the dyes have OEKO-TEX ECO PASSPORT certification?
Yes. Certificate 21.0.64039 issued by Hohenstein under category 2.6 Reactive dyes, covering 55 COTFIX products. It includes RSL screening against STANDARD 100, STeP MRSL, LEATHER STANDARD and REACH SVHC.
Do COTFIX dyes contain APEO, NPEO or SVHC substances?
No. No banned chemicals, APEO/NPEO or SVHC candidate-list substances are used or intentionally added. Products are non-hazardous, non-flammable and eco-friendly.
Need the certificates for a tender?
Tell us which documents your buyer is asking for and we will send the current signed copies.
Request certificate copies See the COTFIX range