Korean: 2-클로로-6-에틸아미노-4-나이트로페놀 · CAS 131657-78-8 · Functions: hair dyeing
Prohibited only in certain forms or uses MFDS prohibited ingredients
Conditions (official MFDS text, Korean):
다만, 산화형염모제에서 용법·용량에 따른 혼합물의 염모성분으로서 1.5 % 이하, 비산화형염모제에서 용법·용량에 따른 혼합물의 염모성분으로서 3 % 이하는 제외
Source: MFDS — cosmetic ingredient use restrictions · checked Oct 17, 2026
Restricted Annex III/201
Maximum: 3.0%
Conditions: Product type: a) Hair dye substance in oxidative hair dye product b) Hair dye substance in non-oxidative hair dye product a) Afther mixing oxidative conditions the maximum concentration applied to hair must not exceed 1,5% (a) and (b) - Do not use with nitrosating systems - Maximum nitrosamine content: 50 microgram/kg - Keep in nitrite-free containers
Required label warning: Can cause allergic reaction
Source: EU CosIng — Annex III · checked Oct 17, 2026
Restricted Annex III/251
Maximum: (a) 3.0% (b) 3.0%
Conditions: Product type: (a) Oxidising colouring agents for hair dyeing (b) Non-oxidising colouring agents for hair dyeing In combination with hydrogen peroxide the maximum use concentration upon application is 1.5% Not to be used after 31.12.2009
Source: EU CosIng — Annex III · checked Oct 17, 2026
No specific rule on file. The FDA regulates few cosmetic ingredients by name; no rule does not mean approval.
How 2-Chloro-6-Ethylamino-4-Nitrophenol is treated in 2 more markets, from the overseas cosmetic regulation database compiled by Korea's MFDS. Always confirm with the regulator of that country before selling there.
| Market | Status | Conditions |
|---|---|---|
| AS ASEAN (10 countries) | Restricted | MFDS summary (Korean): (15) The free base and salts of this hair colouring ingredient, unless prohibited under Annex II, are permitted for use. * 단서조항(주석) : (15) The free base and salts of this hair colouring ingredient, unless prohibited under Annex II, are permitted for use. Annex II의 금지된 염모제의 염이나 자유 염기가 아니라면,... |
| TW Taiwan | Restricted | MFDS summary (Korean): ※ 染髮、脫色、脫染及燙髮產品之應刊載之注意事項，應依衛生福利部公告刊載之。 ※ 染髮產品之限量標準：係指該成分依產品使用說明書混合後之最高允許使用量。 ※ 化粧品之外包裝或容器，應明顯標示本表所列成分之注意事項。因外包裝或容器表面積過小或其他特殊情形致不能標示者，應於標籤、仿單或以其他方式刊載之。 ※ 本表所稱之口腔製劑，包含非藥用牙膏、漱口水類及美白牙齒類等化粧品。 ※ 化粧品宣稱效能者，須符合化粧品標示宣傳廣告涉及虛偽誇大或醫療效能認定準則規定。 * 단서조항 : ※ 染髮、脫色、脫染及燙髮產品之應刊載之注意事項，應依衛生福利部公告刊載之。 ※... |
Source: MFDS cosmetic ingredient use restrictions — overseas regulations · checked Oct 17, 2026
2-CHLORO-6-ETHYLAMINO-4-NITROPHENOL 2-클로로-6-에틸아미노-4-나이트로페놀
Information only, not medical advice. Rules change — always check the linked official source. If you are pregnant, have a skin condition or allergies, ask a dermatologist or pharmacist.
In the EU's CosIng records it is listed as “Restricted” (EU CosIng — Annex III). The maximum allowed is 3.0%. A restricted ingredient is allowed within the stated conditions.
In Korea's MFDS records it is listed as “Prohibited only in certain forms or uses” (MFDS — cosmetic ingredient use restrictions). It is not a general ban; see the condition on the ingredient page.
We found no specific rule for it in the FDA's records. That is not an approval or a safety statement.
The EU's CosIng inventory lists its functions as: hair dyeing.
Korea's MFDS standard Korean name is 2-클로로-6-에틸아미노-4-나이트로페놀.
CAS 131657-78-8 (from official records).