SYNTECH

MSDS Core Safety Information + Storage & Safe Operation Guide

1. Product Basic Info (MSDS Section 1)

• Name: Sodium 2-methylprop-2-ene-1-sulfonate, SMAS
• CAS: 1561-92-8 | EINECS: 216-341-5
• Formula: C4​H7​NaO3​S | MW: 158.15
• Two grades: 99.5% anhydrous white crystal powder; 35% pale yellow aqueous liquid

2. GHS Hazard Classification (MSDS Section 2)

Signal Word: Warning

GHS Hazard Statements

• H315: Causes skin irritation
• H319: Causes serious eye irritation
• H335: May cause respiratory irritation from powder dust
• H317: May trigger allergic skin reaction

Precautionary Statements

• Prevent dust generation; wear full PPE during handling
• Avoid inhalation, skin/eye direct contact
• Rinse thoroughly with water after accidental exposure
• Store sealed, separate from oxidants & strong acids

Environmental Risk

WGK Germany Class 1: Slightly harmful to aquatic life; prohibit direct discharge to waterways

3. Composition & Impurity Limits (MSDS Section 3)

• Active SMAS: ≥99.5% (powder); 35±0.5% (liquid)
• Impurities: NaCl ≤0.035%, Na₂SO₃ ≤0.02%, Fe ≤0.4ppm, moisture ≤0.5%

4. First-Aid Measures (MSDS Section 4)

1. Inhalation (powder dust)Move victim to fresh air; rest. If coughing/shortness persists, seek medical help.
2. Skin ContactRemove contaminated clothing; wash skin with plenty of running water for 10–15 mins.
3. Eye Splashing (liquid / dust)Flush eyes continuously with clean water for ≥15 mins, lift eyelids; consult doctor immediately.
4. IngestionDo NOT induce vomiting; drink large amounts of clean water and seek medical care.

5. Fire-Fighting Measures (MSDS Section 5)

• Non-flammable solid/liquid; thermal decomposition above 280°C releases toxic sulfur oxides fumes
• Extinguishing media: Water mist, dry powder, CO₂, foam
• Fire protective gear: Self-contained breathing apparatus (SCBA), full chemical-resistant suit
• Avoid direct water jet on molten decomposed material to prevent toxic mist diffusion

6. Leakage Emergency Disposal (MSDS Section 6)

Powder Spill

1. Block dust spread with plastic sheet; wear dust mask & goggles
2. Sweep material into sealed plastic containers; do not dry brush (raises dust)
3. Wash residual with plenty of water, collect wastewater for centralized treatment

Liquid Spill (35% SMAS)

1. Dike leakage with sand/absorbent cloth to prevent flow into drains
2. Absorb with inert absorbent; transfer to sealed waste barrels
3. Flush contaminated ground with diluted alkaline water

7. Safe Operation Instructions (MSDS Section 7)

General Operation Rules

1. All staff receive chemical safety training before operation; follow standard SOP strictly
2. Operate in workshops with local exhaust ventilation; install dust collection system for powder feeding
3. Use anti-spark tools, grounded equipment to eliminate static charge
4. Avoid dust floating; add powder slowly into dissolving tank with gentle stirring
5. Do not eat, drink or smoke in operation area; wash hands/face thoroughly after work

Mandatory PPE (MSDS Section 8)

• Respiratory: KN95 dust mask (powder operation)
• Eye: Chemical splash-proof safety goggles
• Skin: Nitrile chemical gloves, long-sleeve protective overalls
• Footwear: Anti-slip rubber safety boots

Engineering Control

Install emergency safety shower & eye-wash station near feeding/dissolving zone

8. Standard Storage Specifications (MSDS Section 7)

Storage Environment

1. Cool, dry, fully ventilated warehouse; ambient temperature ≤35°C, away from sunlight & heat sources
2. Isolate from strong oxidants, concentrated strong acid, food raw materials; separate storage zone with clear partition
3. Warehouse equipped with anti-static grounding, explosion-proof lighting, dust exhaust system

Grade-Specific Storage Rules

99.5% SMAS Powder

• Pack: 25kg PE-lined woven vacuum bags
• Keep containers fully sealed to stop moisture absorption & caking
• Shelf life: 24 months under intact seal

35% SMAS Aqueous Liquid

• Pack: 25L HDPE drums / 1000L IBC tanks
• Prevent freezing below 0°C (crystallization blocks pipelines)
• Shelf life: 18 months sealed

Storage Labeling

Mark clear labels: Product name, CAS No., hazard warning, batch No., production & expiry date

9. Stability & Incompatibility (MSDS Section 10)

• Stable under normal sealed storage; no self-polymerization at room temp
• Incompatible substances: Strong oxidizers, concentrated sulfuric acid, strong alkali (high temp triggers decomposition)
• Avoid long-term UV irradiation (causes slight discoloration & minor performance drop)

10. Waste Disposal (MSDS Section 13)

• Recycle qualified leftover SMAS for production use if possible
• Waste material: Neutralize with weak alkali, send to certified chemical incinerator with flue gas treatment
• Comply with local industrial chemical waste discharge regulations