product

SPECIFICATION

usage

 used in mining industry as inhibitor , curing agent , removing agent

used in synthetic organic intermediate and preparation of sulfur dye additives .

  Used in textile industry as a bleaching, as a desulfurizing and as a dechlorinating agent

used in pulp and paper industry.

used in water treatment as an oxygen scavenger agent.

OTHER USED

♦ In the photographic industry to protect developer solutions from oxidation.
♦ It is used in the production of rubber chemicals and other chemical compounds.
♦ It is use in other applications include ore flotation, oil recovery, food preservative, making dyes, and detergent.

FAQ

Q: How can I get some samples?
A: Can provide free samples for testing before order, just pay for the courier cost.

Q: What’s the payment terms?
A: 30% T/T deposit, 70% T/T balance payment before shipment.

Q: How does your factory do regarding quality control?
A: We have a strict quality control system, and our professional experts will check the goods packing and test functions of all our items before shipment.

Hazard Identification

Classification of the substance or mixture
Corrosive to metals, Category 1
Acute toxicity – Category 3, Oral
Skin corrosion, Sub-category 1B
Serious eye damage, Category 1
Hazardous to the aquatic environment, short-term (Acute) – Category Acute 1

GHS label elements, including precautionary statements

Pictogram(s)
Signal word	Danger
Hazard statement(s)	H290 May be corrosive to metals H301 Toxic if swallowed H314 Causes severe skin burns and eye damage H400 Very toxic to aquatic life
Precautionary statement(s)
Prevention	P234 Keep only in original packaging. P264 Wash … thoroughly after handling. P270 Do not eat, drink or smoke when using this product. P260 Do not breathe dust/fume/gas/mist/vapours/spray. P280 Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/… P273 Avoid release to the environment.
Response	P390 Absorb spillage to prevent material damage. P301+P316 IF SWALLOWED: Get emergency medical help immediately. P321 Specific treatment (see … on this label). P330 Rinse mouth. P301+P330+P331 IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. P363 Wash contaminated clothing before reuse. P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing. P316 Get emergency medical help immediately. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. P305+P354+P338 IF IN EYES: Immediately rinse with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. P317 Get medical help. P391 Collect spillage.
Storage	P406 Store in a corrosion resistant/…container with a resistant inner liner. P405 Store locked up.
Disposal	P501 Dispose of contents/container to an appropriate treatment and disposal facility in accordance with applicable laws and regulations, and product characteristics at time of disposal.

Other hazards which do not result in classification

Working Process

Chemical equation: 2NaOH+H2S=NA2S+2H2O
NA2S+H2S=2NAHS
First Step: Use sodium hydroxide liquid absorb hydrogen sulfide generate sodium sulphide
Second Step: When sodium sulfide absorption saturation,continue to absorb hydrogen sulfide generate sodium hydrosulphide.

Sodium hydrosulfide have 2 kinds of appearance,70%min yellow flake and 30% yellowsih liquid.
We have different specs which depends on Fe content,we have 10ppm,15ppm,20ppm and 30ppm.Different Fe content,the quality is different.