# SODIUM METABISULFITE (sodium-metabisulfite) — Global Cosmetic Regulatory & Formulation Monograph

- **Canonical URL**: https://www.inciname.com/en/ingredients/sodium-metabisulfite
- **Standard INCI**: `SODIUM METABISULFITE`
- **KR MFDS Standard Name**: `소듐메타바이설파이트`
- **CAS No.**: `7681-57-4`
- **EC / EINECS No.**: `231-673-0`
- **Origin**: `mineral`
- **Functions**: 항산화제, 방부제, 환원제
- **Molecular Formula / MW**: `—` (— g/mol)

## 1. 7-Track Official Regulatory Label Names
| Track | Official Label Nomenclature |
| :--- | :--- |
| KR (MFDS Standard) | 소듐메타바이설파이트 |
| KR (Former Names) | — |
| EU (CosIng 1223/2009) | SODIUM METABISULFITE |
| US (PCPC / MoCRA INCI) | SODIUM METABISULFITE |
| US (FDA OTC Monograph) | — |
| CN (NMPA IECIC) | 焦亚硫酸钠 |
| JP (JCIA / MHLW QD) | SODIUM METABISULFITE  |

## 2. Layer 1 — Global 6-Region Statutory Summary
- **KR (MFDS)**: `restricted`
- **EU (1223/2009)**: `restricted`
- **US (FDA/MoCRA)**: `none`
- **CN (NMPA IECIC)**: `allowed` (Entry: `3426`)
- **JP (MHLW)**: `none`
- **ASEAN (ACD)**: `none`



## 3. Layer 2 — Toxicological & Historical Safe Use Concentrations
- Listed within general cosmetic GMP safety thresholds.

## 4. Layer 3 — Formulation Quartiles & Compatibility
- **Optimal pH Window**: 4.5 – 7.5
- **Max Process Temp**: ≤ 70°C
- **Synergy Pairings**: —
- **Incompatibilities**: —

## 5. Academic Monograph
Sodium Metabisulfite is the inorganic salt that conforms to the formula:

## 6. Linked PubMed Literature