Shandong Huashang Chemical Co., Ltd. is a high-tech enterprise focused on industry of fine chemicals research and develop, produce and sale. Shandong Huashang Chemical Co., Ltd. is located in Shan Dong Ji Nan China. we have the ability to provide you high quality products. More than 90 % of our products are exported to developed countries and regions such as north America, Europe, Japan, South Korea and the Middle East.
1. Basic Product Profile
- Full Name: Glyceryl monothioglycolate
- Aliases: Monothioglyceride thioglycolate, Thioglycolic acid glyceryl ester, GMTG
- CAS Number: 30618-84-9
- EINECS: N/A
- Molecular Formula: C5H10O4S
- Molecular Weight: 166.19
- Chemical Classification: Sulfhydryl-containing cosmetic reducing agent, organic ester fine chemical, hair perm raw material
- Core Advantages
Contains active -SH sulfhydryl group, mild reducing property, low irritation to scalp compared with thioglycolic acid. Good water solubility, stable neutral system, widely used in permanent hair waving, hair straightening cream, hair repair cosmetic raw materials.
2. Physical & Chemical Properties
2.1 Physical Index
- Appearance: Colorless to pale yellow transparent viscous liquid
- Odor: Light sulfur characteristic odor
- Solubility: Miscible with water, ethanol, glycerin; insoluble in mineral oil, aliphatic alkanes
- Density (20℃): 1.23–1.28 g/cm3
- Refractive Index nD20: 1.470–1.480
- pH (10% aqueous solution): 4.5–6.0
- Hygroscopy: Highly hygroscopic, easy to absorb moisture in air
- Oxidation Sensitivity: Sulfhydryl group easy to oxidize when exposed to air, solution turns yellow gradually
2.2 Chemical Properties
- Reducing Activity: Active sulfhydryl breaks disulfide bonds inside hair keratin, realizes hair shaping for perming
- Ester Stability: Stable under weak acid-neutral environment; hydrolyzes under strong alkaline heating to release thioglycolic acid
- Oxidation Reaction: Reacts with oxygen, hydrogen peroxide to form disulfide dimer, loses reducing activity
- Compatibility: Compatible with cosmetic surfactants, moisturizers; incompatible with strong oxidants, heavy metal ions
- Skin Mildness: Glyceryl group improves water solubility and reduces skin irritation, suitable for mild perm formulas
3. Main Application Fields
3.1 Hair Perm & Straightening Cosmetics (Core Usage)
Main reducing raw material for cold perm lotion, hair straightening cream. Breaks hair cystine disulfide bonds to reshape hair texture, mild formula less irritating to scalp than traditional thioglycolate.
3.2 Hair Repair Care Products
Additive for damaged hair mask, hair essence; reduces hair breakage, restores hair softness after chemical dyeing and perming.
3.3 Fine Chemical Reducing Agent
Mild reducing auxiliary for cosmetic raw material synthesis, antioxidant stabilizer for personal care formulations.
3.4 Biochemical Auxiliary Reagent
Sulfhydryl protective reagent for protein extraction in laboratory experiments, prevents protein disulfide cross-linking denaturation.
4. Quality Specification Table
| Test Item | Standard Index |
| CAS No. | 30618-84-9 |
| Molecular Formula | C5H10O4S |
| Molecular Weight | 166.19 |
| Appearance | Colorless to pale yellow viscous liquid |
| Purity (HPLC) | Cosmetic Grade ≥98.0% |
| Thioglycolic Acid Free Content | ≤0.50% |
| Moisture Content | ≤0.80% |
| Heavy Metals (Pb) | ≤10 ppm |
| Color (APHA) | ≤150 |
| Bulk Package | 200L plastic drum, nitrogen sealed |
| Sample Package | 1L / 5L sealed plastic bottle |
| Storage Requirements | Hermetic nitrogen sealed cool warehouse ≤25℃; isolate air, oxidants, heavy metal salts to avoid oxidation failure |
| Transportation Rule | General cosmetic organic raw material, non-hazardous goods; airtight packaging to prevent oxidation |
| Shelf Life | 12 months under intact nitrogen-sealed packaging |
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