Safety (MSDS) data for sodium silicate
General
Synonyms: silicic acid sodium salt, water glass, sodium water glass, soluble glass, silicate of soda, silicon sodium oxide, sodium orthosilicate, sodium sesquisilicate, sodium silicate glass, agrosil S, barasil S, britesil, carsil 2000, chemfin 60, chemsilicate, crystal 79, crystal 96, ineos 140, inosil Na 4237, portil A, pyramid 8, vitrosol N40, ZhS 3, very large number of further trade names
Molecular formula: Na4O4Si
CAS No: 1344-09-8
EC No: 239-981-7
Physical data
Appearance: colourless liquid as usually supplied (solution)
Melting point:
Boiling point: ca. 102 C for a 40% aqueous solution
Vapour density:
Vapour pressure:
Specific gravity: approximately 1.3 for a ca. 40% solution
Flash point:
Explosion limits:
Autoignition temperature:
Stability
Stable. Incompatible with acids, most metals, many organic materials.
Toxicology
Harmful by ingestion. Corrosive - may cause burns through skin or eye contact. Very destructive of mucous membranes.
Risk phrases
(The meaning of any risk phrases which appear in this section is given here.)
R22 R34.
Transport information
Non-hazardous for air, sea and road freight.
Personal protection
Safety glasses, gloves.
Safety phrases
(The meaning of any safety phrases which appear in this section is given here.)
S23 S24 S25 S26 S27 S36 S37 S39.
Specific Gravity @20C 40.7 - 41.4
Weight Ratio (SiO2/Na2O) 3.12 - 3.25
Na2O % 8.75 - 9.14
SiO2 % 27.3 - 29.7
Total Solids % 36.1 - 38.8
Clarity % 90 - 100
1 quart = 0.95 liters 1 gallon = 3.78 liters 5 gallons=18.90 liters
1 lb = 0.453 kg 5 lbs = 2.27 kg 10 lbs = 4.53 kg 25 lbs = 11.33 kg
参考资料：google 答案 :Na4O4Si 36.1 - 38.8%可溶 以上资料仅为提高英语水平,可以只看这里
